Add jquery and flot to catapult/third_party.

third_party/flot/jquery.flot.js

+/* Javascript plotting library for jQuery, version 0.8.3.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+*/
+
+// first an inline dependency, jquery.colorhelpers.js, we inline it here
+// for convenience
+
+/* Plugin for jQuery for working with colors.
+ *
+ * Version 1.1.
+ *
+ * Inspiration from jQuery color animation plugin by John Resig.
+ *
+ * Released under the MIT license by Ole Laursen, October 2009.
+ *
+ * Examples:
+ *
+ *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
+ *   var c = $.color.extract($("#mydiv"), 'background-color');
+ *   console.log(c.r, c.g, c.b, c.a);
+ *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
+ *
+ * Note that .scale() and .add() return the same modified object
+ * instead of making a new one.
+ *
+ * V. 1.1: Fix error handling so e.g. parsing an empty string does
+ * produce a color rather than just crashing.
+ */
+(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
+
+// the actual Flot code
+(function($) {
+
+        // Cache the prototype hasOwnProperty for faster access
+
+        var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+    // A shim to provide 'detach' to jQuery versions prior to 1.4.  Using a DOM
+    // operation produces the same effect as detach, i.e. removing the element
+    // without touching its jQuery data.
+
+    // Do not merge this into Flot 0.9, since it requires jQuery 1.4.4+.
+
+    if (!$.fn.detach) {
+        $.fn.detach = function() {
+            return this.each(function() {
+                if (this.parentNode) {
+                    this.parentNode.removeChild( this );
+                }
+            });
+        };
+    }
+
+        ///////////////////////////////////////////////////////////////////////////
+        // The Canvas object is a wrapper around an HTML5 <canvas> tag.
+        //
+        // @constructor
+        // @param {string} cls List of classes to apply to the canvas.
+        // @param {element} container Element onto which to append the canvas.
+        //
+        // Requiring a container is a little iffy, but unfortunately canvas
+        // operations don't work unless the canvas is attached to the DOM.
+
+        function Canvas(cls, container) {
+
+                var element = container.children("." + cls)[0];
+
+                if (element == null) {
+
+                        element = document.createElement("canvas");
+                        element.className = cls;
+
+                        $(element).css({ direction: "ltr", position: "absolute", left: 0, top: 0 })
+                                .appendTo(container);
+
+                        // If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
+
+                        if (!element.getContext) {
+                                if (window.G_vmlCanvasManager) {
+                                        element = window.G_vmlCanvasManager.initElement(element);
+                                } else {
+                                        throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.");
+                                }
+                        }
+                }
+
+                this.element = element;
+
+                var context = this.context = element.getContext("2d");
+
+                // Determine the screen's ratio of physical to device-independent
+                // pixels.  This is the ratio between the canvas width that the browser
+                // advertises and the number of pixels actually present in that space.
+
+                // The iPhone 4, for example, has a device-independent width of 320px,
+                // but its screen is actually 640px wide.  It therefore has a pixel
+                // ratio of 2, while most normal devices have a ratio of 1.
+
+                var devicePixelRatio = window.devicePixelRatio || 1,
+                        backingStoreRatio =
+                                context.webkitBackingStorePixelRatio ||
+                                context.mozBackingStorePixelRatio ||
+                                context.msBackingStorePixelRatio ||
+                                context.oBackingStorePixelRatio ||
+                                context.backingStorePixelRatio || 1;
+
+                this.pixelRatio = devicePixelRatio / backingStoreRatio;
+
+                // Size the canvas to match the internal dimensions of its container
+
+                this.resize(container.width(), container.height());
+
+                // Collection of HTML div layers for text overlaid onto the canvas
+
+                this.textContainer = null;
+                this.text = {};
+
+                // Cache of text fragments and metrics, so we can avoid expensively
+                // re-calculating them when the plot is re-rendered in a loop.
+
+                this._textCache = {};
+        }
+
+        // Resizes the canvas to the given dimensions.
+        //
+        // @param {number} width New width of the canvas, in pixels.
+        // @param {number} width New height of the canvas, in pixels.
+
+        Canvas.prototype.resize = function(width, height) {
+
+                if (width <= 0 || height <= 0) {
+                        throw new Error("Invalid dimensions for plot, width = " + width + ", height = " + height);
+                }
+
+                var element = this.element,
+                        context = this.context,
+                        pixelRatio = this.pixelRatio;
+
+                // Resize the canvas, increasing its density based on the display's
+                // pixel ratio; basically giving it more pixels without increasing the
+                // size of its element, to take advantage of the fact that retina
+                // displays have that many more pixels in the same advertised space.
+
+                // Resizing should reset the state (excanvas seems to be buggy though)
+
+                if (this.width != width) {
+                        element.width = width * pixelRatio;
+                        element.style.width = width + "px";
+                        this.width = width;
+                }
+
+                if (this.height != height) {
+                        element.height = height * pixelRatio;
+                        element.style.height = height + "px";
+                        this.height = height;
+                }
+
+                // Save the context, so we can reset in case we get replotted.  The
+                // restore ensure that we're really back at the initial state, and
+                // should be safe even if we haven't saved the initial state yet.
+
+                context.restore();
+                context.save();
+
+                // Scale the coordinate space to match the display density; so even though we
+                // may have twice as many pixels, we still want lines and other drawing to
+                // appear at the same size; the extra pixels will just make them crisper.
+
+                context.scale(pixelRatio, pixelRatio);
+        };
+
+        // Clears the entire canvas area, not including any overlaid HTML text
+
+        Canvas.prototype.clear = function() {
+                this.context.clearRect(0, 0, this.width, this.height);
+        };
+
+        // Finishes rendering the canvas, including managing the text overlay.
+
+        Canvas.prototype.render = function() {
+
+                var cache = this._textCache;
+
+                // For each text layer, add elements marked as active that haven't
+                // already been rendered, and remove those that are no longer active.
+
+                for (var layerKey in cache) {
+                        if (hasOwnProperty.call(cache, layerKey)) {
+
+                                var layer = this.getTextLayer(layerKey),
+                                        layerCache = cache[layerKey];
+
+                                layer.hide();
+
+                                for (var styleKey in layerCache) {
+                                        if (hasOwnProperty.call(layerCache, styleKey)) {
+                                                var styleCache = layerCache[styleKey];
+                                                for (var key in styleCache) {
+                                                        if (hasOwnProperty.call(styleCache, key)) {
+
+                                                                var positions = styleCache[key].positions;
+
+                                                                for (var i = 0, position; position = positions[i]; i++) {
+                                                                        if (position.active) {
+                                                                                if (!position.rendered) {
+                                                                                        layer.append(position.element);
+                                                                                        position.rendered = true;
+                                                                                }
+                                                                        } else {
+                                                                                positions.splice(i--, 1);
+                                                                                if (position.rendered) {
+                                                                                        position.element.detach();
+                                                                                }
+                                                                        }
+                                                                }
+
+                                                                if (positions.length == 0) {
+                                                                        delete styleCache[key];
+                                                                }
+                                                        }
+                                                }
+                                        }
+                                }
+
+                                layer.show();
+                        }
+                }
+        };
+
+        // Creates (if necessary) and returns the text overlay container.
+        //
+        // @param {string} classes String of space-separated CSS classes used to
+        //     uniquely identify the text layer.
+        // @return {object} The jQuery-wrapped text-layer div.
+
+        Canvas.prototype.getTextLayer = function(classes) {
+
+                var layer = this.text[classes];
+
+                // Create the text layer if it doesn't exist
+
+                if (layer == null) {
+
+                        // Create the text layer container, if it doesn't exist
+
+                        if (this.textContainer == null) {
+                                this.textContainer = $("<div class='flot-text'></div>")
+                                        .css({
+                                                position: "absolute",
+                                                top: 0,
+                                                left: 0,
+                                                bottom: 0,
+                                                right: 0,
+                                                'font-size': "smaller",
+                                                color: "#545454"
+                                        })
+                                        .insertAfter(this.element);
+                        }
+
+                        layer = this.text[classes] = $("<div></div>")
+                                .addClass(classes)
+                                .css({
+                                        position: "absolute",
+                                        top: 0,
+                                        left: 0,
+                                        bottom: 0,
+                                        right: 0
+                                })
+                                .appendTo(this.textContainer);
+                }
+
+                return layer;
+        };
+
+        // Creates (if necessary) and returns a text info object.
+        //
+        // The object looks like this:
+        //
+        // {
+        //     width: Width of the text's wrapper div.
+        //     height: Height of the text's wrapper div.
+        //     element: The jQuery-wrapped HTML div containing the text.
+        //     positions: Array of positions at which this text is drawn.
+        // }
+        //
+        // The positions array contains objects that look like this:
+        //
+        // {
+        //     active: Flag indicating whether the text should be visible.
+        //     rendered: Flag indicating whether the text is currently visible.
+        //     element: The jQuery-wrapped HTML div containing the text.
+        //     x: X coordinate at which to draw the text.
+        //     y: Y coordinate at which to draw the text.
+        // }
+        //
+        // Each position after the first receives a clone of the original element.
+        //
+        // The idea is that that the width, height, and general 'identity' of the
+        // text is constant no matter where it is placed; the placements are a
+        // secondary property.
+        //
+        // Canvas maintains a cache of recently-used text info objects; getTextInfo
+        // either returns the cached element or creates a new entry.
+        //
+        // @param {string} layer A string of space-separated CSS classes uniquely
+        //     identifying the layer containing this text.
+        // @param {string} text Text string to retrieve info for.
+        // @param {(string|object)=} font Either a string of space-separated CSS
+        //     classes or a font-spec object, defining the text's font and style.
+        // @param {number=} angle Angle at which to rotate the text, in degrees.
+        //     Angle is currently unused, it will be implemented in the future.
+        // @param {number=} width Maximum width of the text before it wraps.
+        // @return {object} a text info object.
+
+        Canvas.prototype.getTextInfo = function(layer, text, font, angle, width) {
+
+                var textStyle, layerCache, styleCache, info;
+
+                // Cast the value to a string, in case we were given a number or such
+
+                text = "" + text;
+
+                // If the font is a font-spec object, generate a CSS font definition
+
+                if (typeof font === "object") {
+                        textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
+                } else {
+                        textStyle = font;
+                }
+
+                // Retrieve (or create) the cache for the text's layer and styles
+
+                layerCache = this._textCache[layer];
+
+                if (layerCache == null) {
+                        layerCache = this._textCache[layer] = {};
+                }
+
+                styleCache = layerCache[textStyle];
+
+                if (styleCache == null) {
+                        styleCache = layerCache[textStyle] = {};
+                }
+
+                info = styleCache[text];
+
+                // If we can't find a matching element in our cache, create a new one
+
+                if (info == null) {
+
+                        var element = $("<div></div>").html(text)
+                                .css({
+                                        position: "absolute",
+                                        'max-width': width,
+                                        top: -9999
+                                })
+                                .appendTo(this.getTextLayer(layer));
+
+                        if (typeof font === "object") {
+                                element.css({
+                                        font: textStyle,
+                                        color: font.color
+                                });
+                        } else if (typeof font === "string") {
+                                element.addClass(font);
+                        }
+
+                        info = styleCache[text] = {
+                                width: element.outerWidth(true),
+                                height: element.outerHeight(true),
+                                element: element,
+                                positions: []
+                        };
+
+                        element.detach();
+                }
+
+                return info;
+        };
+
+        // Adds a text string to the canvas text overlay.
+        //
+        // The text isn't drawn immediately; it is marked as rendering, which will
+        // result in its addition to the canvas on the next render pass.
+        //
+        // @param {string} layer A string of space-separated CSS classes uniquely
+        //     identifying the layer containing this text.
+        // @param {number} x X coordinate at which to draw the text.
+        // @param {number} y Y coordinate at which to draw the text.
+        // @param {string} text Text string to draw.
+        // @param {(string|object)=} font Either a string of space-separated CSS
+        //     classes or a font-spec object, defining the text's font and style.
+        // @param {number=} angle Angle at which to rotate the text, in degrees.
+        //     Angle is currently unused, it will be implemented in the future.
+        // @param {number=} width Maximum width of the text before it wraps.
+        // @param {string=} halign Horizontal alignment of the text; either "left",
+        //     "center" or "right".
+        // @param {string=} valign Vertical alignment of the text; either "top",
+        //     "middle" or "bottom".
+
+        Canvas.prototype.addText = function(layer, x, y, text, font, angle, width, halign, valign) {
+
+                var info = this.getTextInfo(layer, text, font, angle, width),
+                        positions = info.positions;
+
+                // Tweak the div's position to match the text's alignment
+
+                if (halign == "center") {
+                        x -= info.width / 2;
+                } else if (halign == "right") {
+                        x -= info.width;
+                }
+
+                if (valign == "middle") {
+                        y -= info.height / 2;
+                } else if (valign == "bottom") {
+                        y -= info.height;
+                }
+
+                // Determine whether this text already exists at this position.
+                // If so, mark it for inclusion in the next render pass.
+
+                for (var i = 0, position; position = positions[i]; i++) {
+                        if (position.x == x && position.y == y) {
+                                position.active = true;
+                                return;
+                        }
+                }
+
+                // If the text doesn't exist at this position, create a new entry
+
+                // For the very first position we'll re-use the original element,
+                // while for subsequent ones we'll clone it.
+
+                position = {
+                        active: true,
+                        rendered: false,
+                        element: positions.length ? info.element.clone() : info.element,
+                        x: x,
+                        y: y
+                };
+
+                positions.push(position);
+
+                // Move the element to its final position within the container
+
+                position.element.css({
+                        top: Math.round(y),
+                        left: Math.round(x),
+                        'text-align': halign    // In case the text wraps
+                });
+        };
+
+        // Removes one or more text strings from the canvas text overlay.
+        //
+        // If no parameters are given, all text within the layer is removed.
+        //
+        // Note that the text is not immediately removed; it is simply marked as
+        // inactive, which will result in its removal on the next render pass.
+        // This avoids the performance penalty for 'clear and redraw' behavior,
+        // where we potentially get rid of all text on a layer, but will likely
+        // add back most or all of it later, as when redrawing axes, for example.
+        //
+        // @param {string} layer A string of space-separated CSS classes uniquely
+        //     identifying the layer containing this text.
+        // @param {number=} x X coordinate of the text.
+        // @param {number=} y Y coordinate of the text.
+        // @param {string=} text Text string to remove.
+        // @param {(string|object)=} font Either a string of space-separated CSS
+        //     classes or a font-spec object, defining the text's font and style.
+        // @param {number=} angle Angle at which the text is rotated, in degrees.
+        //     Angle is currently unused, it will be implemented in the future.
+
+        Canvas.prototype.removeText = function(layer, x, y, text, font, angle) {
+                if (text == null) {
+                        var layerCache = this._textCache[layer];
+                        if (layerCache != null) {
+                                for (var styleKey in layerCache) {
+                                        if (hasOwnProperty.call(layerCache, styleKey)) {
+                                                var styleCache = layerCache[styleKey];
+                                                for (var key in styleCache) {
+                                                        if (hasOwnProperty.call(styleCache, key)) {
+                                                                var positions = styleCache[key].positions;
+                                                                for (var i = 0, position; position = positions[i]; i++) {
+                                                                        position.active = false;
+                                                                }
+                                                        }
+                                                }
+                                        }
+                                }
+                        }
+                } else {
+                        var positions = this.getTextInfo(layer, text, font, angle).positions;
+                        for (var i = 0, position; position = positions[i]; i++) {
+                                if (position.x == x && position.y == y) {
+                                        position.active = false;
+                                }
+                        }
+                }
+        };
+
+        ///////////////////////////////////////////////////////////////////////////
+        // The top-level container for the entire plot.
+
+    function Plot(placeholder, data_, options_, plugins) {
+        // data is on the form:
+        //   [ series1, series2 ... ]
+        // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
+        // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
+
+        var series = [],
+            options = {
+                // the color theme used for graphs
+                colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
+                legend: {
+                    show: true,
+                    noColumns: 1, // number of colums in legend table
+                    labelFormatter: null, // fn: string -> string
+                    labelBoxBorderColor: "#ccc", // border color for the little label boxes
+                    container: null, // container (as jQuery object) to put legend in, null means default on top of graph
+                    position: "ne", // position of default legend container within plot
+                    margin: 5, // distance from grid edge to default legend container within plot
+                    backgroundColor: null, // null means auto-detect
+                    backgroundOpacity: 0.85, // set to 0 to avoid background
+                    sorted: null    // default to no legend sorting
+                },
+                xaxis: {
+                    show: null, // null = auto-detect, true = always, false = never
+                    position: "bottom", // or "top"
+                    mode: null, // null or "time"
+                    font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
+                    color: null, // base color, labels, ticks
+                    tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
+                    transform: null, // null or f: number -> number to transform axis
+                    inverseTransform: null, // if transform is set, this should be the inverse function
+                    min: null, // min. value to show, null means set automatically
+                    max: null, // max. value to show, null means set automatically
+                    autoscaleMargin: null, // margin in % to add if auto-setting min/max
+                    ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
+                    tickFormatter: null, // fn: number -> string
+                    labelWidth: null, // size of tick labels in pixels
+                    labelHeight: null,
+                    reserveSpace: null, // whether to reserve space even if axis isn't shown
+                    tickLength: null, // size in pixels of ticks, or "full" for whole line
+                    alignTicksWithAxis: null, // axis number or null for no sync
+                    tickDecimals: null, // no. of decimals, null means auto
+                    tickSize: null, // number or [number, "unit"]
+                    minTickSize: null // number or [number, "unit"]
+                },
+                yaxis: {
+                    autoscaleMargin: 0.02,
+                    position: "left" // or "right"
+                },
+                xaxes: [],
+                yaxes: [],
+                series: {
+                    points: {
+                        show: false,
+                        radius: 3,
+                        lineWidth: 2, // in pixels
+                        fill: true,
+                        fillColor: "#ffffff",
+                        symbol: "circle" // or callback
+                    },
+                    lines: {
+                        // we don't put in show: false so we can see
+                        // whether lines were actively disabled
+                        lineWidth: 2, // in pixels
+                        fill: false,
+                        fillColor: null,
+                        steps: false
+                        // Omit 'zero', so we can later default its value to
+                        // match that of the 'fill' option.
+                    },
+                    bars: {
+                        show: false,
+                        lineWidth: 2, // in pixels
+                        barWidth: 1, // in units of the x axis
+                        fill: true,
+                        fillColor: null,
+                        align: "left", // "left", "right", or "center"
+                        horizontal: false,
+                        zero: true
+                    },
+                    shadowSize: 3,
+                    highlightColor: null
+                },
+                grid: {
+                    show: true,
+                    aboveData: false,
+                    color: "#545454", // primary color used for outline and labels
+                    backgroundColor: null, // null for transparent, else color
+                    borderColor: null, // set if different from the grid color
+                    tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
+                    margin: 0, // distance from the canvas edge to the grid
+                    labelMargin: 5, // in pixels
+                    axisMargin: 8, // in pixels
+                    borderWidth: 2, // in pixels
+                    minBorderMargin: null, // in pixels, null means taken from points radius
+                    markings: null, // array of ranges or fn: axes -> array of ranges
+                    markingsColor: "#f4f4f4",
+                    markingsLineWidth: 2,
+                    // interactive stuff
+                    clickable: false,
+                    hoverable: false,
+                    autoHighlight: true, // highlight in case mouse is near
+                    mouseActiveRadius: 10 // how far the mouse can be away to activate an item
+                },
+                interaction: {
+                    redrawOverlayInterval: 1000/60 // time between updates, -1 means in same flow
+                },
+                hooks: {}
+            },
+        surface = null,     // the canvas for the plot itself
+        overlay = null,     // canvas for interactive stuff on top of plot
+        eventHolder = null, // jQuery object that events should be bound to
+        ctx = null, octx = null,
+        xaxes = [], yaxes = [],
+        plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
+        plotWidth = 0, plotHeight = 0,
+        hooks = {
+            processOptions: [],
+            processRawData: [],
+            processDatapoints: [],
+            processOffset: [],
+            drawBackground: [],
+            drawSeries: [],
+            draw: [],
+            bindEvents: [],
+            drawOverlay: [],
+            shutdown: []
+        },
+        plot = this;
+
+        // public functions
+        plot.setData = setData;
+        plot.setupGrid = setupGrid;
+        plot.draw = draw;
+        plot.getPlaceholder = function() { return placeholder; };
+        plot.getCanvas = function() { return surface.element; };
+        plot.getPlotOffset = function() { return plotOffset; };
+        plot.width = function () { return plotWidth; };
+        plot.height = function () { return plotHeight; };
+        plot.offset = function () {
+            var o = eventHolder.offset();
+            o.left += plotOffset.left;
+            o.top += plotOffset.top;
+            return o;
+        };
+        plot.getData = function () { return series; };
+        plot.getAxes = function () {
+            var res = {}, i;
+            $.each(xaxes.concat(yaxes), function (_, axis) {
+                if (axis)
+                    res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis;
+            });
+            return res;
+        };
+        plot.getXAxes = function () { return xaxes; };
+        plot.getYAxes = function () { return yaxes; };
+        plot.c2p = canvasToAxisCoords;
+        plot.p2c = axisToCanvasCoords;
+        plot.getOptions = function () { return options; };
+        plot.highlight = highlight;
+        plot.unhighlight = unhighlight;
+        plot.triggerRedrawOverlay = triggerRedrawOverlay;
+        plot.pointOffset = function(point) {
+            return {
+                left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
+                top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
+            };
+        };
+        plot.shutdown = shutdown;
+        plot.destroy = function () {
+            shutdown();
+            placeholder.removeData("plot").empty();
+
+            series = [];
+            options = null;
+            surface = null;
+            overlay = null;
+            eventHolder = null;
+            ctx = null;
+            octx = null;
+            xaxes = [];
+            yaxes = [];
+            hooks = null;
+            highlights = [];
+            plot = null;
+        };
+        plot.resize = function () {
+                var width = placeholder.width(),
+                        height = placeholder.height();
+            surface.resize(width, height);
+            overlay.resize(width, height);
+        };
+
+        // public attributes
+        plot.hooks = hooks;
+
+        // initialize
+        initPlugins(plot);
+        parseOptions(options_);
+        setupCanvases();
+        setData(data_);
+        setupGrid();
+        draw();
+        bindEvents();
+
+
+        function executeHooks(hook, args) {
+            args = [plot].concat(args);
+            for (var i = 0; i < hook.length; ++i)
+                hook[i].apply(this, args);
+        }
+
+        function initPlugins() {
+
+            // References to key classes, allowing plugins to modify them
+
+            var classes = {
+                Canvas: Canvas
+            };
+
+            for (var i = 0; i < plugins.length; ++i) {
+                var p = plugins[i];
+                p.init(plot, classes);
+                if (p.options)
+                    $.extend(true, options, p.options);
+            }
+        }
+
+        function parseOptions(opts) {
+
+            $.extend(true, options, opts);
+
+            // $.extend merges arrays, rather than replacing them.  When less
+            // colors are provided than the size of the default palette, we
+            // end up with those colors plus the remaining defaults, which is
+            // not expected behavior; avoid it by replacing them here.
+
+            if (opts && opts.colors) {
+                options.colors = opts.colors;
+            }
+
+            if (options.xaxis.color == null)
+                options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+            if (options.yaxis.color == null)
+                options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+
+            if (options.xaxis.tickColor == null) // grid.tickColor for back-compatibility
+                options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
+            if (options.yaxis.tickColor == null) // grid.tickColor for back-compatibility
+                options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
+
+            if (options.grid.borderColor == null)
+                options.grid.borderColor = options.grid.color;
+            if (options.grid.tickColor == null)
+                options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+
+            // Fill in defaults for axis options, including any unspecified
+            // font-spec fields, if a font-spec was provided.
+
+            // If no x/y axis options were provided, create one of each anyway,
+            // since the rest of the code assumes that they exist.
+
+            var i, axisOptions, axisCount,
+                fontSize = placeholder.css("font-size"),
+                fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
+                fontDefaults = {
+                    style: placeholder.css("font-style"),
+                    size: Math.round(0.8 * fontSizeDefault),
+                    variant: placeholder.css("font-variant"),
+                    weight: placeholder.css("font-weight"),
+                    family: placeholder.css("font-family")
+                };
+
+            axisCount = options.xaxes.length || 1;
+            for (i = 0; i < axisCount; ++i) {
+
+                axisOptions = options.xaxes[i];
+                if (axisOptions && !axisOptions.tickColor) {
+                    axisOptions.tickColor = axisOptions.color;
+                }
+
+                axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
+                options.xaxes[i] = axisOptions;
+
+                if (axisOptions.font) {
+                    axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
+                    if (!axisOptions.font.color) {
+                        axisOptions.font.color = axisOptions.color;
+                    }
+                    if (!axisOptions.font.lineHeight) {
+                        axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
+                    }
+                }
+            }
+
+            axisCount = options.yaxes.length || 1;
+            for (i = 0; i < axisCount; ++i) {
+
+                axisOptions = options.yaxes[i];
+                if (axisOptions && !axisOptions.tickColor) {
+                    axisOptions.tickColor = axisOptions.color;
+                }
+
+                axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
+                options.yaxes[i] = axisOptions;
+
+                if (axisOptions.font) {
+                    axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
+                    if (!axisOptions.font.color) {
+                        axisOptions.font.color = axisOptions.color;
+                    }
+                    if (!axisOptions.font.lineHeight) {
+                        axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
+                    }
+                }
+            }
+
+            // backwards compatibility, to be removed in future
+            if (options.xaxis.noTicks && options.xaxis.ticks == null)
+                options.xaxis.ticks = options.xaxis.noTicks;
+            if (options.yaxis.noTicks && options.yaxis.ticks == null)
+                options.yaxis.ticks = options.yaxis.noTicks;
+            if (options.x2axis) {
+                options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis);
+                options.xaxes[1].position = "top";
+                // Override the inherit to allow the axis to auto-scale
+                if (options.x2axis.min == null) {
+                    options.xaxes[1].min = null;
+                }
+                if (options.x2axis.max == null) {
+                    options.xaxes[1].max = null;
+                }
+            }
+            if (options.y2axis) {
+                options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis);
+                options.yaxes[1].position = "right";
+                // Override the inherit to allow the axis to auto-scale
+                if (options.y2axis.min == null) {
+                    options.yaxes[1].min = null;
+                }
+                if (options.y2axis.max == null) {
+                    options.yaxes[1].max = null;
+                }
+            }
+            if (options.grid.coloredAreas)
+                options.grid.markings = options.grid.coloredAreas;
+            if (options.grid.coloredAreasColor)
+                options.grid.markingsColor = options.grid.coloredAreasColor;
+            if (options.lines)
+                $.extend(true, options.series.lines, options.lines);
+            if (options.points)
+                $.extend(true, options.series.points, options.points);
+            if (options.bars)
+                $.extend(true, options.series.bars, options.bars);
+            if (options.shadowSize != null)
+                options.series.shadowSize = options.shadowSize;
+            if (options.highlightColor != null)
+                options.series.highlightColor = options.highlightColor;
+
+            // save options on axes for future reference
+            for (i = 0; i < options.xaxes.length; ++i)
+                getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
+            for (i = 0; i < options.yaxes.length; ++i)
+                getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
+
+            // add hooks from options
+            for (var n in hooks)
+                if (options.hooks[n] && options.hooks[n].length)
+                    hooks[n] = hooks[n].concat(options.hooks[n]);
+
+            executeHooks(hooks.processOptions, [options]);
+        }
+
+        function setData(d) {
+            series = parseData(d);
+            fillInSeriesOptions();
+            processData();
+        }
+
+        function parseData(d) {
+            var res = [];
+            for (var i = 0; i < d.length; ++i) {
+                var s = $.extend(true, {}, options.series);
+
+                if (d[i].data != null) {
+                    s.data = d[i].data; // move the data instead of deep-copy
+                    delete d[i].data;
+
+                    $.extend(true, s, d[i]);
+
+                    d[i].data = s.data;
+                }
+                else
+                    s.data = d[i];
+                res.push(s);
+            }
+
+            return res;
+        }
+
+        function axisNumber(obj, coord) {
+            var a = obj[coord + "axis"];
+            if (typeof a == "object") // if we got a real axis, extract number
+                a = a.n;
+            if (typeof a != "number")
+                a = 1; // default to first axis
+            return a;
+        }
+
+        function allAxes() {
+            // return flat array without annoying null entries
+            return $.grep(xaxes.concat(yaxes), function (a) { return a; });
+        }
+
+        function canvasToAxisCoords(pos) {
+            // return an object with x/y corresponding to all used axes
+            var res = {}, i, axis;
+            for (i = 0; i < xaxes.length; ++i) {
+                axis = xaxes[i];
+                if (axis && axis.used)
+                    res["x" + axis.n] = axis.c2p(pos.left);
+            }
+
+            for (i = 0; i < yaxes.length; ++i) {
+                axis = yaxes[i];
+                if (axis && axis.used)
+                    res["y" + axis.n] = axis.c2p(pos.top);
+            }
+
+            if (res.x1 !== undefined)
+                res.x = res.x1;
+            if (res.y1 !== undefined)
+                res.y = res.y1;
+
+            return res;
+        }
+
+        function axisToCanvasCoords(pos) {
+            // get canvas coords from the first pair of x/y found in pos
+            var res = {}, i, axis, key;
+
+            for (i = 0; i < xaxes.length; ++i) {
+                axis = xaxes[i];
+                if (axis && axis.used) {
+                    key = "x" + axis.n;
+                    if (pos[key] == null && axis.n == 1)
+                        key = "x";
+
+                    if (pos[key] != null) {
+                        res.left = axis.p2c(pos[key]);
+                        break;
+                    }
+                }
+            }
+
+            for (i = 0; i < yaxes.length; ++i) {
+                axis = yaxes[i];
+                if (axis && axis.used) {
+                    key = "y" + axis.n;
+                    if (pos[key] == null && axis.n == 1)
+                        key = "y";
+
+                    if (pos[key] != null) {
+                        res.top = axis.p2c(pos[key]);
+                        break;
+                    }
+                }
+            }
+
+            return res;
+        }
+
+        function getOrCreateAxis(axes, number) {
+            if (!axes[number - 1])
+                axes[number - 1] = {
+                    n: number, // save the number for future reference
+                    direction: axes == xaxes ? "x" : "y",
+                    options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis)
+                };
+
+            return axes[number - 1];
+        }
+
+        function fillInSeriesOptions() {
+
+            var neededColors = series.length, maxIndex = -1, i;
+
+            // Subtract the number of series that already have fixed colors or
+            // color indexes from the number that we still need to generate.
+
+            for (i = 0; i < series.length; ++i) {
+                var sc = series[i].color;
+                if (sc != null) {
+                    neededColors--;
+                    if (typeof sc == "number" && sc > maxIndex) {
+                        maxIndex = sc;
+                    }
+                }
+            }
+
+            // If any of the series have fixed color indexes, then we need to
+            // generate at least as many colors as the highest index.
+
+            if (neededColors <= maxIndex) {
+                neededColors = maxIndex + 1;
+            }
+
+            // Generate all the colors, using first the option colors and then
+            // variations on those colors once they're exhausted.
+
+            var c, colors = [], colorPool = options.colors,
+                colorPoolSize = colorPool.length, variation = 0;
+
+            for (i = 0; i < neededColors; i++) {
+
+                c = $.color.parse(colorPool[i % colorPoolSize] || "#666");
+
+                // Each time we exhaust the colors in the pool we adjust
+                // a scaling factor used to produce more variations on
+                // those colors. The factor alternates negative/positive
+                // to produce lighter/darker colors.
+
+                // Reset the variation after every few cycles, or else
+                // it will end up producing only white or black colors.
+
+                if (i % colorPoolSize == 0 && i) {
+                    if (variation >= 0) {
+                        if (variation < 0.5) {
+                            variation = -variation - 0.2;
+                        } else variation = 0;
+                    } else variation = -variation;
+                }
+
+                colors[i] = c.scale('rgb', 1 + variation);
+            }
+
+            // Finalize the series options, filling in their colors
+
+            var colori = 0, s;
+            for (i = 0; i < series.length; ++i) {
+                s = series[i];
+
+                // assign colors
+                if (s.color == null) {
+                    s.color = colors[colori].toString();
+                    ++colori;
+                }
+                else if (typeof s.color == "number")
+                    s.color = colors[s.color].toString();
+
+                // turn on lines automatically in case nothing is set
+                if (s.lines.show == null) {
+                    var v, show = true;
+                    for (v in s)
+                        if (s[v] && s[v].show) {
+                            show = false;
+                            break;
+                        }
+                    if (show)
+                        s.lines.show = true;
+                }
+
+                // If nothing was provided for lines.zero, default it to match
+                // lines.fill, since areas by default should extend to zero.
+
+                if (s.lines.zero == null) {
+                    s.lines.zero = !!s.lines.fill;
+                }
+
+                // setup axes
+                s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
+                s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
+            }
+        }
+
+        function processData() {
+            var topSentry = Number.POSITIVE_INFINITY,
+                bottomSentry = Number.NEGATIVE_INFINITY,
+                fakeInfinity = Number.MAX_VALUE,
+                i, j, k, m, length,
+                s, points, ps, x, y, axis, val, f, p,
+                data, format;
+
+            function updateAxis(axis, min, max) {
+                if (min < axis.datamin && min != -fakeInfinity)
+                    axis.datamin = min;
+                if (max > axis.datamax && max != fakeInfinity)
+                    axis.datamax = max;
+            }
+
+            $.each(allAxes(), function (_, axis) {
+                // init axis
+                axis.datamin = topSentry;
+                axis.datamax = bottomSentry;
+                axis.used = false;
+            });
+
+            for (i = 0; i < series.length; ++i) {
+                s = series[i];
+                s.datapoints = { points: [] };
+
+                executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
+            }
+
+            // first pass: clean and copy data
+            for (i = 0; i < series.length; ++i) {
+                s = series[i];
+
+                data = s.data;
+                format = s.datapoints.format;
+
+                if (!format) {
+                    format = [];
+                    // find out how to copy
+                    format.push({ x: true, number: true, required: true });
+                    format.push({ y: true, number: true, required: true });
+
+                    if (s.bars.show || (s.lines.show && s.lines.fill)) {
+                        var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
+                        format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
+                        if (s.bars.horizontal) {
+                            delete format[format.length - 1].y;
+                            format[format.length - 1].x = true;
+                        }
+                    }
+
+                    s.datapoints.format = format;
+                }
+
+                if (s.datapoints.pointsize != null)
+                    continue; // already filled in
+
+                s.datapoints.pointsize = format.length;
+
+                ps = s.datapoints.pointsize;
+                points = s.datapoints.points;
+
+                var insertSteps = s.lines.show && s.lines.steps;
+                s.xaxis.used = s.yaxis.used = true;
+
+                for (j = k = 0; j < data.length; ++j, k += ps) {
+                    p = data[j];
+
+                    var nullify = p == null;
+                    if (!nullify) {
+                        for (m = 0; m < ps; ++m) {
+                            val = p[m];
+                            f = format[m];
+
+                            if (f) {
+                                if (f.number && val != null) {
+                                    val = +val; // convert to number
+                                    if (isNaN(val))
+                                        val = null;
+                                    else if (val == Infinity)
+                                        val = fakeInfinity;
+                                    else if (val == -Infinity)
+                                        val = -fakeInfinity;
+                                }
+
+                                if (val == null) {
+                                    if (f.required)
+                                        nullify = true;
+
+                                    if (f.defaultValue != null)
+                                        val = f.defaultValue;
+                                }
+                            }
+
+                            points[k + m] = val;
+                        }
+                    }
+
+                    if (nullify) {
+                        for (m = 0; m < ps; ++m) {
+                            val = points[k + m];
+                            if (val != null) {
+                                f = format[m];
+                                // extract min/max info
+                                if (f.autoscale !== false) {
+                                    if (f.x) {
+                                        updateAxis(s.xaxis, val, val);
+                                    }
+                                    if (f.y) {
+                                        updateAxis(s.yaxis, val, val);
+                                    }
+                                }
+                            }
+                            points[k + m] = null;
+                        }
+                    }
+                    else {
+                        // a little bit of line specific stuff that
+                        // perhaps shouldn't be here, but lacking
+                        // better means...
+                        if (insertSteps && k > 0
+                            && points[k - ps] != null
+                            && points[k - ps] != points[k]
+                            && points[k - ps + 1] != points[k + 1]) {
+                            // copy the point to make room for a middle point
+                            for (m = 0; m < ps; ++m)
+                                points[k + ps + m] = points[k + m];
+
+                            // middle point has same y
+                            points[k + 1] = points[k - ps + 1];
+
+                            // we've added a point, better reflect that
+                            k += ps;
+                        }
+                    }
+                }
+            }
+
+            // give the hooks a chance to run
+            for (i = 0; i < series.length; ++i) {
+                s = series[i];
+
+                executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
+            }
+
+            // second pass: find datamax/datamin for auto-scaling
+            for (i = 0; i < series.length; ++i) {
+                s = series[i];
+                points = s.datapoints.points;
+                ps = s.datapoints.pointsize;
+                format = s.datapoints.format;
+
+                var xmin = topSentry, ymin = topSentry,
+                    xmax = bottomSentry, ymax = bottomSentry;
+
+                for (j = 0; j < points.length; j += ps) {
+                    if (points[j] == null)
+                        continue;
+
+                    for (m = 0; m < ps; ++m) {
+                        val = points[j + m];
+                        f = format[m];
+                        if (!f || f.autoscale === false || val == fakeInfinity || val == -fakeInfinity)
+                            continue;
+
+                        if (f.x) {
+                            if (val < xmin)
+                                xmin = val;
+                            if (val > xmax)
+                                xmax = val;
+                        }
+                        if (f.y) {
+                            if (val < ymin)
+                                ymin = val;
+                            if (val > ymax)
+                                ymax = val;
+                        }
+                    }
+                }
+
+                if (s.bars.show) {
+                    // make sure we got room for the bar on the dancing floor
+                    var delta;
+
+                    switch (s.bars.align) {
+                        case "left":
+                            delta = 0;
+                            break;
+                        case "right":
+                            delta = -s.bars.barWidth;
+                            break;
+                        default:
+                            delta = -s.bars.barWidth / 2;
+                    }
+
+                    if (s.bars.horizontal) {
+                        ymin += delta;
+                        ymax += delta + s.bars.barWidth;
+                    }
+                    else {
+                        xmin += delta;
+                        xmax += delta + s.bars.barWidth;
+                    }
+                }
+
+                updateAxis(s.xaxis, xmin, xmax);
+                updateAxis(s.yaxis, ymin, ymax);
+            }
+
+            $.each(allAxes(), function (_, axis) {
+                if (axis.datamin == topSentry)
+                    axis.datamin = null;
+                if (axis.datamax == bottomSentry)
+                    axis.datamax = null;
+            });
+        }
+
+        function setupCanvases() {
+
+            // Make sure the placeholder is clear of everything except canvases
+            // from a previous plot in this container that we'll try to re-use.
+
+            placeholder.css("padding", 0) // padding messes up the positioning
+                .children().filter(function(){
+                    return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
+                }).remove();
+
+            if (placeholder.css("position") == 'static')
+                placeholder.css("position", "relative"); // for positioning labels and overlay
+
+            surface = new Canvas("flot-base", placeholder);
+            overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
+
+            ctx = surface.context;
+            octx = overlay.context;
+
+            // define which element we're listening for events on
+            eventHolder = $(overlay.element).unbind();
+
+            // If we're re-using a plot object, shut down the old one
+
+            var existing = placeholder.data("plot");
+
+            if (existing) {
+                existing.shutdown();
+                overlay.clear();
+            }
+
+            // save in case we get replotted
+            placeholder.data("plot", plot);
+        }
+
+        function bindEvents() {
+            // bind events
+            if (options.grid.hoverable) {
+                eventHolder.mousemove(onMouseMove);
+
+                // Use bind, rather than .mouseleave, because we officially
+                // still support jQuery 1.2.6, which doesn't define a shortcut
+                // for mouseenter or mouseleave.  This was a bug/oversight that
+                // was fixed somewhere around 1.3.x.  We can return to using
+                // .mouseleave when we drop support for 1.2.6.
+
+                eventHolder.bind("mouseleave", onMouseLeave);
+            }
+
+            if (options.grid.clickable)
+                eventHolder.click(onClick);
+
+            executeHooks(hooks.bindEvents, [eventHolder]);
+        }
+
+        function shutdown() {
+            if (redrawTimeout)
+                clearTimeout(redrawTimeout);
+
+            eventHolder.unbind("mousemove", onMouseMove);
+            eventHolder.unbind("mouseleave", onMouseLeave);
+            eventHolder.unbind("click", onClick);
+
+            executeHooks(hooks.shutdown, [eventHolder]);
+        }
+
+        function setTransformationHelpers(axis) {
+            // set helper functions on the axis, assumes plot area
+            // has been computed already
+
+            function identity(x) { return x; }
+
+            var s, m, t = axis.options.transform || identity,
+                it = axis.options.inverseTransform;
+
+            // precompute how much the axis is scaling a point
+            // in canvas space
+            if (axis.direction == "x") {
+                s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
+                m = Math.min(t(axis.max), t(axis.min));
+            }
+            else {
+                s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
+                s = -s;
+                m = Math.max(t(axis.max), t(axis.min));
+            }
+
+            // data point to canvas coordinate
+            if (t == identity) // slight optimization
+                axis.p2c = function (p) { return (p - m) * s; };
+            else
+                axis.p2c = function (p) { return (t(p) - m) * s; };
+            // canvas coordinate to data point
+            if (!it)
+                axis.c2p = function (c) { return m + c / s; };
+            else
+                axis.c2p = function (c) { return it(m + c / s); };
+        }
+
+        function measureTickLabels(axis) {
+
+            var opts = axis.options,
+                ticks = axis.ticks || [],
+                labelWidth = opts.labelWidth || 0,
+                labelHeight = opts.labelHeight || 0,
+                maxWidth = labelWidth || (axis.direction == "x" ? Math.floor(surface.width / (ticks.length || 1)) : null),
+                legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
+                layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
+                font = opts.font || "flot-tick-label tickLabel";
+
+            for (var i = 0; i < ticks.length; ++i) {
+
+                var t = ticks[i];
+
+                if (!t.label)
+                    continue;
+
+                var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
+
+                labelWidth = Math.max(labelWidth, info.width);
+                labelHeight = Math.max(labelHeight, info.height);
+            }
+
+            axis.labelWidth = opts.labelWidth || labelWidth;
+            axis.labelHeight = opts.labelHeight || labelHeight;
+        }
+
+        function allocateAxisBoxFirstPhase(axis) {
+            // find the bounding box of the axis by looking at label
+            // widths/heights and ticks, make room by diminishing the
+            // plotOffset; this first phase only looks at one
+            // dimension per axis, the other dimension depends on the
+            // other axes so will have to wait
+
+            var lw = axis.labelWidth,
+                lh = axis.labelHeight,
+                pos = axis.options.position,
+                isXAxis = axis.direction === "x",
+                tickLength = axis.options.tickLength,
+                axisMargin = options.grid.axisMargin,
+                padding = options.grid.labelMargin,
+                innermost = true,
+                outermost = true,
+                first = true,
+                found = false;
+
+            // Determine the axis's position in its direction and on its side
+
+            $.each(isXAxis ? xaxes : yaxes, function(i, a) {
+                if (a && (a.show || a.reserveSpace)) {
+                    if (a === axis) {
+                        found = true;
+                    } else if (a.options.position === pos) {
+                        if (found) {
+                            outermost = false;
+                        } else {
+                            innermost = false;
+                        }
+                    }
+                    if (!found) {
+                        first = false;
+                    }
+                }
+            });
+
+            // The outermost axis on each side has no margin
+
+            if (outermost) {
+                axisMargin = 0;
+            }
+
+            // The ticks for the first axis in each direction stretch across
+
+            if (tickLength == null) {
+                tickLength = first ? "full" : 5;
+            }
+
+            if (!isNaN(+tickLength))
+                padding += +tickLength;
+
+            if (isXAxis) {
+                lh += padding;
+
+                if (pos == "bottom") {
+                    plotOffset.bottom += lh + axisMargin;
+                    axis.box = { top: surface.height - plotOffset.bottom, height: lh };
+                }
+                else {
+                    axis.box = { top: plotOffset.top + axisMargin, height: lh };
+                    plotOffset.top += lh + axisMargin;
+                }
+            }
+            else {
+                lw += padding;
+
+                if (pos == "left") {
+                    axis.box = { left: plotOffset.left + axisMargin, width: lw };
+                    plotOffset.left += lw + axisMargin;
+                }
+                else {
+                    plotOffset.right += lw + axisMargin;
+                    axis.box = { left: surface.width - plotOffset.right, width: lw };
+                }
+            }
+
+             // save for future reference
+            axis.position = pos;
+            axis.tickLength = tickLength;
+            axis.box.padding = padding;
+            axis.innermost = innermost;
+        }
+
+        function allocateAxisBoxSecondPhase(axis) {
+            // now that all axis boxes have been placed in one
+            // dimension, we can set the remaining dimension coordinates
+            if (axis.direction == "x") {
+                axis.box.left = plotOffset.left - axis.labelWidth / 2;
+                axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
+            }
+            else {
+                axis.box.top = plotOffset.top - axis.labelHeight / 2;
+                axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
+            }
+        }
+
+        function adjustLayoutForThingsStickingOut() {
+            // possibly adjust plot offset to ensure everything stays
+            // inside the canvas and isn't clipped off
+
+            var minMargin = options.grid.minBorderMargin,
+                axis, i;
+
+            // check stuff from the plot (FIXME: this should just read
+            // a value from the series, otherwise it's impossible to
+            // customize)
+            if (minMargin == null) {
+                minMargin = 0;
+                for (i = 0; i < series.length; ++i)
+                    minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
+            }
+
+            var margins = {
+                left: minMargin,
+                right: minMargin,
+                top: minMargin,
+                bottom: minMargin
+            };
+
+            // check axis labels, note we don't check the actual
+            // labels but instead use the overall width/height to not
+            // jump as much around with replots
+            $.each(allAxes(), function (_, axis) {
+                if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
+                    if (axis.direction === "x") {
+                        margins.left = Math.max(margins.left, axis.labelWidth / 2);
+                        margins.right = Math.max(margins.right, axis.labelWidth / 2);
+                    } else {
+                        margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
+                        margins.top = Math.max(margins.top, axis.labelHeight / 2);
+                    }
+                }
+            });
+
+            plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
+            plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
+            plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
+            plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
+        }
+
+        function setupGrid() {
+            var i, axes = allAxes(), showGrid = options.grid.show;
+
+            // Initialize the plot's offset from the edge of the canvas
+
+            for (var a in plotOffset) {
+                var margin = options.grid.margin || 0;
+                plotOffset[a] = typeof margin == "number" ? margin : margin[a] || 0;
+            }
+
+            executeHooks(hooks.processOffset, [plotOffset]);
+
+            // If the grid is visible, add its border width to the offset
+
+            for (var a in plotOffset) {
+                if(typeof(options.grid.borderWidth) == "object") {
+                    plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
+                }
+                else {
+                    plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
+                }
+            }
+
+            $.each(axes, function (_, axis) {
+                var axisOpts = axis.options;
+                axis.show = axisOpts.show == null ? axis.used : axisOpts.show;
+                axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace;
+                setRange(axis);
+            });
+
+            if (showGrid) {
+
+                var allocatedAxes = $.grep(axes, function (axis) {
+                    return axis.show || axis.reserveSpace;
+                });
+
+                $.each(allocatedAxes, function (_, axis) {
+                    // make the ticks
+                    setupTickGeneration(axis);
+                    setTicks(axis);
+                    snapRangeToTicks(axis, axis.ticks);
+                    // find labelWidth/Height for axis
+                    measureTickLabels(axis);
+                });
+
+                // with all dimensions calculated, we can compute the
+                // axis bounding boxes, start from the outside
+                // (reverse order)
+                for (i = allocatedAxes.length - 1; i >= 0; --i)
+                    allocateAxisBoxFirstPhase(allocatedAxes[i]);
+
+                // make sure we've got enough space for things that
+                // might stick out
+                adjustLayoutForThingsStickingOut();
+
+                $.each(allocatedAxes, function (_, axis) {
+                    allocateAxisBoxSecondPhase(axis);
+                });
+            }
+
+            plotWidth = surface.width - plotOffset.left - plotOffset.right;
+            plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
+
+            // now we got the proper plot dimensions, we can compute the scaling
+            $.each(axes, function (_, axis) {
+                setTransformationHelpers(axis);
+            });
+
+            if (showGrid) {
+                drawAxisLabels();
+            }
+
+            insertLegend();
+        }
+
+        function setRange(axis) {
+            var opts = axis.options,
+                min = +(opts.min != null ? opts.min : axis.datamin),
+                max = +(opts.max != null ? opts.max : axis.datamax),
+                delta = max - min;
+
+            if (delta == 0.0) {
+                // degenerate case
+                var widen = max == 0 ? 1 : 0.01;
+
+                if (opts.min == null)
+                    min -= widen;
+                // always widen max if we couldn't widen min to ensure we
+                // don't fall into min == max which doesn't work
+                if (opts.max == null || opts.min != null)
+                    max += widen;
+            }
+            else {
+                // consider autoscaling
+                var margin = opts.autoscaleMargin;
+                if (margin != null) {
+                    if (opts.min == null) {
+                        min -= delta * margin;
+                        // make sure we don't go below zero if all values
+                        // are positive
+                        if (min < 0 && axis.datamin != null && axis.datamin >= 0)
+                            min = 0;
+                    }
+                    if (opts.max == null) {
+                        max += delta * margin;
+                        if (max > 0 && axis.datamax != null && axis.datamax <= 0)
+                            max = 0;
+                    }
+                }
+            }
+            axis.min = min;
+            axis.max = max;
+        }
+
+        function setupTickGeneration(axis) {
+            var opts = axis.options;
+
+            // estimate number of ticks
+            var noTicks;
+            if (typeof opts.ticks == "number" && opts.ticks > 0)
+                noTicks = opts.ticks;
+            else
+                // heuristic based on the model a*sqrt(x) fitted to
+                // some data points that seemed reasonable
+                noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);
+
+            var delta = (axis.max - axis.min) / noTicks,
+                dec = -Math.floor(Math.log(delta) / Math.LN10),
+                maxDec = opts.tickDecimals;
+
+            if (maxDec != null && dec > maxDec) {
+                dec = maxDec;
+            }
+
+            var magn = Math.pow(10, -dec),
+                norm = delta / magn, // norm is between 1.0 and 10.0
+                size;
+
+            if (norm < 1.5) {
+                size = 1;
+            } else if (norm < 3) {
+                size = 2;
+                // special case for 2.5, requires an extra decimal
+                if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
+                    size = 2.5;
+                    ++dec;
+                }
+            } else if (norm < 7.5) {
+                size = 5;
+            } else {
+                size = 10;
+            }
+
+            size *= magn;
+
+            if (opts.minTickSize != null && size < opts.minTickSize) {
+                size = opts.minTickSize;
+            }
+
+            axis.delta = delta;
+            axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
+            axis.tickSize = opts.tickSize || size;
+
+            // Time mode was moved to a plug-in in 0.8, and since so many people use it
+            // we'll add an especially friendly reminder to make sure they included it.
+
+            if (opts.mode == "time" && !axis.tickGenerator) {
+                throw new Error("Time mode requires the flot.time plugin.");
+            }
+
+            // Flot supports base-10 axes; any other mode else is handled by a plug-in,
+            // like flot.time.js.
+
+            if (!axis.tickGenerator) {
+
+                axis.tickGenerator = function (axis) {
+
+                    var ticks = [],
+                        start = floorInBase(axis.min, axis.tickSize),
+                        i = 0,
+                        v = Number.NaN,
+                        prev;
+
+                    do {
+                        prev = v;
+                        v = start + i * axis.tickSize;
+                        ticks.push(v);
+                        ++i;
+                    } while (v < axis.max && v != prev);
+                    return ticks;
+                };
+
+                                axis.tickFormatter = function (value, axis) {
+
+                                        var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
+                                        var formatted = "" + Math.round(value * factor) / factor;
+
+                                        // If tickDecimals was specified, ensure that we have exactly that
+                                        // much precision; otherwise default to the value's own precision.
+
+                                        if (axis.tickDecimals != null) {
+                                                var decimal = formatted.indexOf(".");
+                                                var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
+                                                if (precision < axis.tickDecimals) {
+                                                        return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
+                                                }
+                                        }
+
+                    return formatted;
+                };
+            }
+
+            if ($.isFunction(opts.tickFormatter))
+                axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
+
+            if (opts.alignTicksWithAxis != null) {
+                var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
+                if (otherAxis && otherAxis.used && otherAxis != axis) {
+                    // consider snapping min/max to outermost nice ticks
+                    var niceTicks = axis.tickGenerator(axis);
+                    if (niceTicks.length > 0) {
+                        if (opts.min == null)
+                            axis.min = Math.min(axis.min, niceTicks[0]);
+                        if (opts.max == null && niceTicks.length > 1)
+                            axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
+                    }
+
+                    axis.tickGenerator = function (axis) {
+                        // copy ticks, scaled to this axis
+                        var ticks = [], v, i;
+                        for (i = 0; i < otherAxis.ticks.length; ++i) {
+                            v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
+                            v = axis.min + v * (axis.max - axis.min);
+                            ticks.push(v);
+                        }
+                        return ticks;
+                    };
+
+                    // we might need an extra decimal since forced
+                    // ticks don't necessarily fit naturally
+                    if (!axis.mode && opts.tickDecimals == null) {
+                        var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
+                            ts = axis.tickGenerator(axis);
+
+                        // only proceed if the tick interval rounded
+                        // with an extra decimal doesn't give us a
+                        // zero at end
+                        if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
+                            axis.tickDecimals = extraDec;
+                    }
+                }
+            }
+        }
+
+        function setTicks(axis) {
+            var oticks = axis.options.ticks, ticks = [];
+            if (oticks == null || (typeof oticks == "number" && oticks > 0))
+                ticks = axis.tickGenerator(axis);
+            else if (oticks) {
+                if ($.isFunction(oticks))
+                    // generate the ticks
+                    ticks = oticks(axis);
+                else
+                    ticks = oticks;
+            }
+
+            // clean up/labelify the supplied ticks, copy them over
+            var i, v;
+            axis.ticks = [];
+            for (i = 0; i < ticks.length; ++i) {
+                var label = null;
+                var t = ticks[i];
+                if (typeof t == "object") {
+                    v = +t[0];
+                    if (t.length > 1)
+                        label = t[1];
+                }
+                else
+                    v = +t;
+                if (label == null)
+                    label = axis.tickFormatter(v, axis);
+                if (!isNaN(v))
+                    axis.ticks.push({ v: v, label: label });
+            }
+        }
+
+        function snapRangeToTicks(axis, ticks) {
+            if (axis.options.autoscaleMargin && ticks.length > 0) {
+                // snap to ticks
+                if (axis.options.min == null)
+                    axis.min = Math.min(axis.min, ticks[0].v);
+                if (axis.options.max == null && ticks.length > 1)
+                    axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
+            }
+        }
+
+        function draw() {
+
+            surface.clear();
+
+            executeHooks(hooks.drawBackground, [ctx]);
+
+            var grid = options.grid;
+
+            // draw background, if any
+            if (grid.show && grid.backgroundColor)
+                drawBackground();
+
+            if (grid.show && !grid.aboveData) {
+                drawGrid();
+            }
+
+            for (var i = 0; i < series.length; ++i) {
+                executeHooks(hooks.drawSeries, [ctx, series[i]]);
+                drawSeries(series[i]);
+            }
+
+            executeHooks(hooks.draw, [ctx]);
+
+            if (grid.show && grid.aboveData) {
+                drawGrid();
+            }
+
+            surface.render();
+
+            // A draw implies that either the axes or data have changed, so we
+            // should probably update the overlay highlights as well.
+
+            triggerRedrawOverlay();
+        }
+
+        function extractRange(ranges, coord) {
+            var axis, from, to, key, axes = allAxes();
+
+            for (var i = 0; i < axes.length; ++i) {
+                axis = axes[i];
+                if (axis.direction == coord) {
+                    key = coord + axis.n + "axis";
+                    if (!ranges[key] && axis.n == 1)
+                        key = coord + "axis"; // support x1axis as xaxis
+                    if (ranges[key]) {
+                        from = ranges[key].from;
+                        to = ranges[key].to;
+                        break;
+                    }
+                }
+            }
+
+            // backwards-compat stuff - to be removed in future
+            if (!ranges[key]) {
+                axis = coord == "x" ? xaxes[0] : yaxes[0];
+                from = ranges[coord + "1"];
+                to = ranges[coord + "2"];
+            }
+
+            // auto-reverse as an added bonus
+            if (from != null && to != null && from > to) {
+                var tmp = from;
+                from = to;
+                to = tmp;
+            }
+
+            return { from: from, to: to, axis: axis };
+        }
+
+        function drawBackground() {
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
+            ctx.fillRect(0, 0, plotWidth, plotHeight);
+            ctx.restore();
+        }
+
+        function drawGrid() {
+            var i, axes, bw, bc;
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            // draw markings
+            var markings = options.grid.markings;
+            if (markings) {
+                if ($.isFunction(markings)) {
+                    axes = plot.getAxes();
+                    // xmin etc. is backwards compatibility, to be
+                    // removed in the future
+                    axes.xmin = axes.xaxis.min;
+                    axes.xmax = axes.xaxis.max;
+                    axes.ymin = axes.yaxis.min;
+                    axes.ymax = axes.yaxis.max;
+
+                    markings = markings(axes);
+                }
+
+                for (i = 0; i < markings.length; ++i) {
+                    var m = markings[i],
+                        xrange = extractRange(m, "x"),
+                        yrange = extractRange(m, "y");
+
+                    // fill in missing
+                    if (xrange.from == null)
+                        xrange.from = xrange.axis.min;
+                    if (xrange.to == null)
+                        xrange.to = xrange.axis.max;
+                    if (yrange.from == null)
+                        yrange.from = yrange.axis.min;
+                    if (yrange.to == null)
+                        yrange.to = yrange.axis.max;
+
+                    // clip
+                    if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
+                        yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
+                        continue;
+
+                    xrange.from = Math.max(xrange.from, xrange.axis.min);
+                    xrange.to = Math.min(xrange.to, xrange.axis.max);
+                    yrange.from = Math.max(yrange.from, yrange.axis.min);
+                    yrange.to = Math.min(yrange.to, yrange.axis.max);
+
+                    var xequal = xrange.from === xrange.to,
+                        yequal = yrange.from === yrange.to;
+
+                    if (xequal && yequal) {
+                        continue;
+                    }
+
+                    // then draw
+                    xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
+                    xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
+                    yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
+                    yrange.to = Math.floor(yrange.axis.p2c(yrange.to));
+
+                    if (xequal || yequal) {
+                        var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
+                            subPixel = lineWidth % 2 ? 0.5 : 0;
+                        ctx.beginPath();
+                        ctx.strokeStyle = m.color || options.grid.markingsColor;
+                        ctx.lineWidth = lineWidth;
+                        if (xequal) {
+                            ctx.moveTo(xrange.to + subPixel, yrange.from);
+                            ctx.lineTo(xrange.to + subPixel, yrange.to);
+                        } else {
+                            ctx.moveTo(xrange.from, yrange.to + subPixel);
+                            ctx.lineTo(xrange.to, yrange.to + subPixel);                            
+                        }
+                        ctx.stroke();
+                    } else {
+                        ctx.fillStyle = m.color || options.grid.markingsColor;
+                        ctx.fillRect(xrange.from, yrange.to,
+                                     xrange.to - xrange.from,
+                                     yrange.from - yrange.to);
+                    }
+                }
+            }
+
+            // draw the ticks
+            axes = allAxes();
+            bw = options.grid.borderWidth;
+
+            for (var j = 0; j < axes.length; ++j) {
+                var axis = axes[j], box = axis.box,
+                    t = axis.tickLength, x, y, xoff, yoff;
+                if (!axis.show || axis.ticks.length == 0)
+                    continue;
+
+                ctx.lineWidth = 1;
+
+                // find the edges
+                if (axis.direction == "x") {
+                    x = 0;
+                    if (t == "full")
+                        y = (axis.position == "top" ? 0 : plotHeight);
+                    else
+                        y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
+                }
+                else {
+                    y = 0;
+                    if (t == "full")
+                        x = (axis.position == "left" ? 0 : plotWidth);
+                    else
+                        x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
+                }
+
+                // draw tick bar
+                if (!axis.innermost) {
+                    ctx.strokeStyle = axis.options.color;
+                    ctx.beginPath();
+                    xoff = yoff = 0;
+                    if (axis.direction == "x")
+                        xoff = plotWidth + 1;
+                    else
+                        yoff = plotHeight + 1;
+
+                    if (ctx.lineWidth == 1) {
+                        if (axis.direction == "x") {
+                            y = Math.floor(y) + 0.5;
+                        } else {
+                            x = Math.floor(x) + 0.5;
+                        }
+                    }
+
+                    ctx.moveTo(x, y);
+                    ctx.lineTo(x + xoff, y + yoff);
+                    ctx.stroke();
+                }
+
+                // draw ticks
+
+                ctx.strokeStyle = axis.options.tickColor;
+
+                ctx.beginPath();
+                for (i = 0; i < axis.ticks.length; ++i) {
+                    var v = axis.ticks[i].v;
+
+                    xoff = yoff = 0;
+
+                    if (isNaN(v) || v < axis.min || v > axis.max
+                        // skip those lying on the axes if we got a border
+                        || (t == "full"
+                            && ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
+                            && (v == axis.min || v == axis.max)))
+                        continue;
+
+                    if (axis.direction == "x") {
+                        x = axis.p2c(v);
+                        yoff = t == "full" ? -plotHeight : t;
+
+                        if (axis.position == "top")
+                            yoff = -yoff;
+                    }
+                    else {
+                        y = axis.p2c(v);
+                        xoff = t == "full" ? -plotWidth : t;
+
+                        if (axis.position == "left")
+                            xoff = -xoff;
+                    }
+
+                    if (ctx.lineWidth == 1) {
+                        if (axis.direction == "x")
+                            x = Math.floor(x) + 0.5;
+                        else
+                            y = Math.floor(y) + 0.5;
+                    }
+
+                    ctx.moveTo(x, y);
+                    ctx.lineTo(x + xoff, y + yoff);
+                }
+
+                ctx.stroke();
+            }
+
+
+            // draw border
+            if (bw) {
+                // If either borderWidth or borderColor is an object, then draw the border
+                // line by line instead of as one rectangle
+                bc = options.grid.borderColor;
+                if(typeof bw == "object" || typeof bc == "object") {
+                    if (typeof bw !== "object") {
+                        bw = {top: bw, right: bw, bottom: bw, left: bw};
+                    }
+                    if (typeof bc !== "object") {
+                        bc = {top: bc, right: bc, bottom: bc, left: bc};
+                    }
+
+                    if (bw.top > 0) {
+                        ctx.strokeStyle = bc.top;
+                        ctx.lineWidth = bw.top;
+                        ctx.beginPath();
+                        ctx.moveTo(0 - bw.left, 0 - bw.top/2);
+                        ctx.lineTo(plotWidth, 0 - bw.top/2);
+                        ctx.stroke();
+                    }
+
+                    if (bw.right > 0) {
+                        ctx.strokeStyle = bc.right;
+                        ctx.lineWidth = bw.right;
+                        ctx.beginPath();
+                        ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
+                        ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
+                        ctx.stroke();
+                    }
+
+                    if (bw.bottom > 0) {
+                        ctx.strokeStyle = bc.bottom;
+                        ctx.lineWidth = bw.bottom;
+                        ctx.beginPath();
+                        ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
+                        ctx.lineTo(0, plotHeight + bw.bottom / 2);
+                        ctx.stroke();
+                    }
+
+                    if (bw.left > 0) {
+                        ctx.strokeStyle = bc.left;
+                        ctx.lineWidth = bw.left;
+                        ctx.beginPath();
+                        ctx.moveTo(0 - bw.left/2, plotHeight + bw.bottom);
+                        ctx.lineTo(0- bw.left/2, 0);
+                        ctx.stroke();
+                    }
+                }
+                else {
+                    ctx.lineWidth = bw;
+                    ctx.strokeStyle = options.grid.borderColor;
+                    ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
+                }
+            }
+
+            ctx.restore();
+        }
+
+        function drawAxisLabels() {
+
+            $.each(allAxes(), function (_, axis) {
+                var box = axis.box,
+                    legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
+                    layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
+                    font = axis.options.font || "flot-tick-label tickLabel",
+                    tick, x, y, halign, valign;
+
+                // Remove text before checking for axis.show and ticks.length;
+                // otherwise plugins, like flot-tickrotor, that draw their own
+                // tick labels will end up with both theirs and the defaults.
+
+                surface.removeText(layer);
+
+                if (!axis.show || axis.ticks.length == 0)
+                    return;
+
+                for (var i = 0; i < axis.ticks.length; ++i) {
+
+                    tick = axis.ticks[i];
+                    if (!tick.label || tick.v < axis.min || tick.v > axis.max)
+                        continue;
+
+                    if (axis.direction == "x") {
+                        halign = "center";
+                        x = plotOffset.left + axis.p2c(tick.v);
+                        if (axis.position == "bottom") {
+                            y = box.top + box.padding;
+                        } else {
+                            y = box.top + box.height - box.padding;
+                            valign = "bottom";
+                        }
+                    } else {
+                        valign = "middle";
+                        y = plotOffset.top + axis.p2c(tick.v);
+                        if (axis.position == "left") {
+                            x = box.left + box.width - box.padding;
+                            halign = "right";
+                        } else {
+                            x = box.left + box.padding;
+                        }
+                    }
+
+                    surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
+                }
+            });
+        }
+
+        function drawSeries(series) {
+            if (series.lines.show)
+                drawSeriesLines(series);
+            if (series.bars.show)
+                drawSeriesBars(series);
+            if (series.points.show)
+                drawSeriesPoints(series);
+        }
+
+        function drawSeriesLines(series) {
+            function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
+                var points = datapoints.points,
+                    ps = datapoints.pointsize,
+                    prevx = null, prevy = null;
+
+                ctx.beginPath();
+                for (var i = ps; i < points.length; i += ps) {
+                    var x1 = points[i - ps], y1 = points[i - ps + 1],
+                        x2 = points[i], y2 = points[i + 1];
+
+                    if (x1 == null || x2 == null)
+                        continue;
+
+                    // clip with ymin
+                    if (y1 <= y2 && y1 < axisy.min) {
+                        if (y2 < axisy.min)
+                            continue;   // line segment is outside
+                        // compute new intersection point
+                        x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y1 = axisy.min;
+                    }
+                    else if (y2 <= y1 && y2 < axisy.min) {
+                        if (y1 < axisy.min)
+                            continue;
+                        x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y2 = axisy.min;
+                    }
+
+                    // clip with ymax
+                    if (y1 >= y2 && y1 > axisy.max) {
+                        if (y2 > axisy.max)
+                            continue;
+                        x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y1 = axisy.max;
+                    }
+                    else if (y2 >= y1 && y2 > axisy.max) {
+                        if (y1 > axisy.max)
+                            continue;
+                        x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y2 = axisy.max;
+                    }
+
+                    // clip with xmin
+                    if (x1 <= x2 && x1 < axisx.min) {
+                        if (x2 < axisx.min)
+                            continue;
+                        y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x1 = axisx.min;
+                    }
+                    else if (x2 <= x1 && x2 < axisx.min) {
+                        if (x1 < axisx.min)
+                            continue;
+                        y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x2 = axisx.min;
+                    }
+
+                    // clip with xmax
+                    if (x1 >= x2 && x1 > axisx.max) {
+                        if (x2 > axisx.max)
+                            continue;
+                        y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x1 = axisx.max;
+                    }
+                    else if (x2 >= x1 && x2 > axisx.max) {
+                        if (x1 > axisx.max)
+                            continue;
+                        y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x2 = axisx.max;
+                    }
+
+                    if (x1 != prevx || y1 != prevy)
+                        ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
+
+                    prevx = x2;
+                    prevy = y2;
+                    ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
+                }
+                ctx.stroke();
+            }
+
+            function plotLineArea(datapoints, axisx, axisy) {
+                var points = datapoints.points,
+                    ps = datapoints.pointsize,
+                    bottom = Math.min(Math.max(0, axisy.min), axisy.max),
+                    i = 0, top, areaOpen = false,
+                    ypos = 1, segmentStart = 0, segmentEnd = 0;
+
+                // we process each segment in two turns, first forward
+                // direction to sketch out top, then once we hit the
+                // end we go backwards to sketch the bottom
+                while (true) {
+                    if (ps > 0 && i > points.length + ps)
+                        break;
+
+                    i += ps; // ps is negative if going backwards
+
+                    var x1 = points[i - ps],
+                        y1 = points[i - ps + ypos],
+                        x2 = points[i], y2 = points[i + ypos];
+
+                    if (areaOpen) {
+                        if (ps > 0 && x1 != null && x2 == null) {
+                            // at turning point
+                            segmentEnd = i;
+                            ps = -ps;
+                            ypos = 2;
+                            continue;
+                        }
+
+                        if (ps < 0 && i == segmentStart + ps) {
+                            // done with the reverse sweep
+                            ctx.fill();
+                            areaOpen = false;
+                            ps = -ps;
+                            ypos = 1;
+                            i = segmentStart = segmentEnd + ps;
+                            continue;
+                        }
+                    }
+
+                    if (x1 == null || x2 == null)
+                        continue;
+
+                    // clip x values
+
+                    // clip with xmin
+                    if (x1 <= x2 && x1 < axisx.min) {
+                        if (x2 < axisx.min)
+                            continue;
+                        y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x1 = axisx.min;
+                    }
+                    else if (x2 <= x1 && x2 < axisx.min) {
+                        if (x1 < axisx.min)
+                            continue;
+                        y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x2 = axisx.min;
+                    }
+
+                    // clip with xmax
+                    if (x1 >= x2 && x1 > axisx.max) {
+                        if (x2 > axisx.max)
+                            continue;
+                        y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x1 = axisx.max;
+                    }
+                    else if (x2 >= x1 && x2 > axisx.max) {
+                        if (x1 > axisx.max)
+                            continue;
+                        y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+                        x2 = axisx.max;
+                    }
+
+                    if (!areaOpen) {
+                        // open area
+                        ctx.beginPath();
+                        ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
+                        areaOpen = true;
+                    }
+
+                    // now first check the case where both is outside
+                    if (y1 >= axisy.max && y2 >= axisy.max) {
+                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
+                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
+                        continue;
+                    }
+                    else if (y1 <= axisy.min && y2 <= axisy.min) {
+                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
+                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
+                        continue;
+                    }
+
+                    // else it's a bit more complicated, there might
+                    // be a flat maxed out rectangle first, then a
+                    // triangular cutout or reverse; to find these
+                    // keep track of the current x values
+                    var x1old = x1, x2old = x2;
+
+                    // clip the y values, without shortcutting, we
+                    // go through all cases in turn
+
+                    // clip with ymin
+                    if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
+                        x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y1 = axisy.min;
+                    }
+                    else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
+                        x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y2 = axisy.min;
+                    }
+
+                    // clip with ymax
+                    if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
+                        x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y1 = axisy.max;
+                    }
+                    else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
+                        x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+                        y2 = axisy.max;
+                    }
+
+                    // if the x value was changed we got a rectangle
+                    // to fill
+                    if (x1 != x1old) {
+                        ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
+                        // it goes to (x1, y1), but we fill that below
+                    }
+
+                    // fill triangular section, this sometimes result
+                    // in redundant points if (x1, y1) hasn't changed
+                    // from previous line to, but we just ignore that
+                    ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
+                    ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
+
+                    // fill the other rectangle if it's there
+                    if (x2 != x2old) {
+                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
+                        ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2));
+                    }
+                }
+            }
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+            ctx.lineJoin = "round";
+
+            var lw = series.lines.lineWidth,
+                sw = series.shadowSize;
+            // FIXME: consider another form of shadow when filling is turned on
+            if (lw > 0 && sw > 0) {
+                // draw shadow as a thick and thin line with transparency
+                ctx.lineWidth = sw;
+                ctx.strokeStyle = "rgba(0,0,0,0.1)";
+                // position shadow at angle from the mid of line
+                var angle = Math.PI/18;
+                plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
+                ctx.lineWidth = sw/2;
+                plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
+            }
+
+            ctx.lineWidth = lw;
+            ctx.strokeStyle = series.color;
+            var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
+            if (fillStyle) {
+                ctx.fillStyle = fillStyle;
+                plotLineArea(series.datapoints, series.xaxis, series.yaxis);
+            }
+
+            if (lw > 0)
+                plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
+            ctx.restore();
+        }
+
+        function drawSeriesPoints(series) {
+            function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) {
+                var points = datapoints.points, ps = datapoints.pointsize;
+
+                for (var i = 0; i < points.length; i += ps) {
+                    var x = points[i], y = points[i + 1];
+                    if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
+                        continue;
+
+                    ctx.beginPath();
+                    x = axisx.p2c(x);
+                    y = axisy.p2c(y) + offset;
+                    if (symbol == "circle")
+                        ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false);
+                    else
+                        symbol(ctx, x, y, radius, shadow);
+                    ctx.closePath();
+
+                    if (fillStyle) {
+                        ctx.fillStyle = fillStyle;
+                        ctx.fill();
+                    }
+                    ctx.stroke();
+                }
+            }
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            var lw = series.points.lineWidth,
+                sw = series.shadowSize,
+                radius = series.points.radius,
+                symbol = series.points.symbol;
+
+            // If the user sets the line width to 0, we change it to a very 
+            // small value. A line width of 0 seems to force the default of 1.
+            // Doing the conditional here allows the shadow setting to still be 
+            // optional even with a lineWidth of 0.
+
+            if( lw == 0 )
+                lw = 0.0001;
+
+            if (lw > 0 && sw > 0) {
+                // draw shadow in two steps
+                var w = sw / 2;
+                ctx.lineWidth = w;
+                ctx.strokeStyle = "rgba(0,0,0,0.1)";
+                plotPoints(series.datapoints, radius, null, w + w/2, true,
+                           series.xaxis, series.yaxis, symbol);
+
+                ctx.strokeStyle = "rgba(0,0,0,0.2)";
+                plotPoints(series.datapoints, radius, null, w/2, true,
+                           series.xaxis, series.yaxis, symbol);
+            }
+
+            ctx.lineWidth = lw;
+            ctx.strokeStyle = series.color;
+            plotPoints(series.datapoints, radius,
+                       getFillStyle(series.points, series.color), 0, false,
+                       series.xaxis, series.yaxis, symbol);
+            ctx.restore();
+        }
+
+        function drawBar(x, y, b, barLeft, barRight, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) {
+            var left, right, bottom, top,
+                drawLeft, drawRight, drawTop, drawBottom,
+                tmp;
+
+            // in horizontal mode, we start the bar from the left
+            // instead of from the bottom so it appears to be
+            // horizontal rather than vertical
+            if (horizontal) {
+                drawBottom = drawRight = drawTop = true;
+                drawLeft = false;
+                left = b;
+                right = x;
+                top = y + barLeft;
+                bottom = y + barRight;
+
+                // account for negative bars
+                if (right < left) {
+                    tmp = right;
+                    right = left;
+                    left = tmp;
+                    drawLeft = true;
+                    drawRight = false;
+                }
+            }
+            else {
+                drawLeft = drawRight = drawTop = true;
+                drawBottom = false;
+                left = x + barLeft;
+                right = x + barRight;
+                bottom = b;
+                top = y;
+
+                // account for negative bars
+                if (top < bottom) {
+                    tmp = top;
+                    top = bottom;
+                    bottom = tmp;
+                    drawBottom = true;
+                    drawTop = false;
+                }
+            }
+
+            // clip
+            if (right < axisx.min || left > axisx.max ||
+                top < axisy.min || bottom > axisy.max)
+                return;
+
+            if (left < axisx.min) {
+                left = axisx.min;
+                drawLeft = false;
+            }
+
+            if (right > axisx.max) {
+                right = axisx.max;
+                drawRight = false;
+            }
+
+            if (bottom < axisy.min) {
+                bottom = axisy.min;
+                drawBottom = false;
+            }
+
+            if (top > axisy.max) {
+                top = axisy.max;
+                drawTop = false;
+            }
+
+            left = axisx.p2c(left);
+            bottom = axisy.p2c(bottom);
+            right = axisx.p2c(right);
+            top = axisy.p2c(top);
+
+            // fill the bar
+            if (fillStyleCallback) {
+                c.fillStyle = fillStyleCallback(bottom, top);
+                c.fillRect(left, top, right - left, bottom - top)
+            }
+
+            // draw outline
+            if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) {
+                c.beginPath();
+
+                // FIXME: inline moveTo is buggy with excanvas
+                c.moveTo(left, bottom);
+                if (drawLeft)
+                    c.lineTo(left, top);
+                else
+                    c.moveTo(left, top);
+                if (drawTop)
+                    c.lineTo(right, top);
+                else
+                    c.moveTo(right, top);
+                if (drawRight)
+                    c.lineTo(right, bottom);
+                else
+                    c.moveTo(right, bottom);
+                if (drawBottom)
+                    c.lineTo(left, bottom);
+                else
+                    c.moveTo(left, bottom);
+                c.stroke();
+            }
+        }
+
+        function drawSeriesBars(series) {
+            function plotBars(datapoints, barLeft, barRight, fillStyleCallback, axisx, axisy) {
+                var points = datapoints.points, ps = datapoints.pointsize;
+
+                for (var i = 0; i < points.length; i += ps) {
+                    if (points[i] == null)
+                        continue;
+                    drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth);
+                }
+            }
+
+            ctx.save();
+            ctx.translate(plotOffset.left, plotOffset.top);
+
+            // FIXME: figure out a way to add shadows (for instance along the right edge)
+            ctx.lineWidth = series.bars.lineWidth;
+            ctx.strokeStyle = series.color;
+
+            var barLeft;
+
+            switch (series.bars.align) {
+                case "left":
+                    barLeft = 0;
+                    break;
+                case "right":
+                    barLeft = -series.bars.barWidth;
+                    break;
+                default:
+                    barLeft = -series.bars.barWidth / 2;
+            }
+
+            var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
+            plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, fillStyleCallback, series.xaxis, series.yaxis);
+            ctx.restore();
+        }
+
+        function getFillStyle(filloptions, seriesColor, bottom, top) {
+            var fill = filloptions.fill;
+            if (!fill)
+                return null;
+
+            if (filloptions.fillColor)
+                return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
+
+            var c = $.color.parse(seriesColor);
+            c.a = typeof fill == "number" ? fill : 0.4;
+            c.normalize();
+            return c.toString();
+        }
+
+        function insertLegend() {
+
+            if (options.legend.container != null) {
+                $(options.legend.container).html("");
+            } else {
+                placeholder.find(".legend").remove();
+            }
+
+            if (!options.legend.show) {
+                return;
+            }
+
+            var fragments = [], entries = [], rowStarted = false,
+                lf = options.legend.labelFormatter, s, label;
+
+            // Build a list of legend entries, with each having a label and a color
+
+            for (var i = 0; i < series.length; ++i) {
+                s = series[i];
+                if (s.label) {
+                    label = lf ? lf(s.label, s) : s.label;
+                    if (label) {
+                        entries.push({
+                            label: label,
+                            color: s.color
+                        });
+                    }
+                }
+            }
+
+            // Sort the legend using either the default or a custom comparator
+
+            if (options.legend.sorted) {
+                if ($.isFunction(options.legend.sorted)) {
+                    entries.sort(options.legend.sorted);
+                } else if (options.legend.sorted == "reverse") {
+                        entries.reverse();
+                } else {
+                    var ascending = options.legend.sorted != "descending";
+                    entries.sort(function(a, b) {
+                        return a.label == b.label ? 0 : (
+                            (a.label < b.label) != ascending ? 1 : -1   // Logical XOR
+                        );
+                    });
+                }
+            }
+
+            // Generate markup for the list of entries, in their final order
+
+            for (var i = 0; i < entries.length; ++i) {
+
+                var entry = entries[i];
+
+                if (i % options.legend.noColumns == 0) {
+                    if (rowStarted)
+                        fragments.push('</tr>');
+                    fragments.push('<tr>');
+                    rowStarted = true;
+                }
+
+                fragments.push(
+                    '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + entry.color + ';overflow:hidden"></div></div></td>' +
+                    '<td class="legendLabel">' + entry.label + '</td>'
+                );
+            }
+
+            if (rowStarted)
+                fragments.push('</tr>');
+
+            if (fragments.length == 0)
+                return;
+
+            var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
+            if (options.legend.container != null)
+                $(options.legend.container).html(table);
+            else {
+                var pos = "",
+                    p = options.legend.position,
+                    m = options.legend.margin;
+                if (m[0] == null)
+                    m = [m, m];
+                if (p.charAt(0) == "n")
+                    pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
+                else if (p.charAt(0) == "s")
+                    pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
+                if (p.charAt(1) == "e")
+                    pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
+                else if (p.charAt(1) == "w")
+                    pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
+                var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
+                if (options.legend.backgroundOpacity != 0.0) {
+                    // put in the transparent background
+                    // separately to avoid blended labels and
+                    // label boxes
+                    var c = options.legend.backgroundColor;
+                    if (c == null) {
+                        c = options.grid.backgroundColor;
+                        if (c && typeof c == "string")
+                            c = $.color.parse(c);
+                        else
+                            c = $.color.extract(legend, 'background-color');
+                        c.a = 1;
+                        c = c.toString();
+                    }
+                    var div = legend.children();
+                    $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
+                }
+            }
+        }
+
+
+        // interactive features
+
+        var highlights = [],
+            redrawTimeout = null;
+
+        // returns the data item the mouse is over, or null if none is found
+        function findNearbyItem(mouseX, mouseY, seriesFilter) {
+            var maxDistance = options.grid.mouseActiveRadius,
+                smallestDistance = maxDistance * maxDistance + 1,
+                item = null, foundPoint = false, i, j, ps;
+
+            for (i = series.length - 1; i >= 0; --i) {
+                if (!seriesFilter(series[i]))
+                    continue;
+
+                var s = series[i],
+                    axisx = s.xaxis,
+                    axisy = s.yaxis,
+                    points = s.datapoints.points,
+                    mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
+                    my = axisy.c2p(mouseY),
+                    maxx = maxDistance / axisx.scale,
+                    maxy = maxDistance / axisy.scale;
+
+                ps = s.datapoints.pointsize;
+                // with inverse transforms, we can't use the maxx/maxy
+                // optimization, sadly
+                if (axisx.options.inverseTransform)
+                    maxx = Number.MAX_VALUE;
+                if (axisy.options.inverseTransform)
+                    maxy = Number.MAX_VALUE;
+
+                if (s.lines.show || s.points.show) {
+                    for (j = 0; j < points.length; j += ps) {
+                        var x = points[j], y = points[j + 1];
+                        if (x == null)
+                            continue;
+
+                        // For points and lines, the cursor must be within a
+                        // certain distance to the data point
+                        if (x - mx > maxx || x - mx < -maxx ||
+                            y - my > maxy || y - my < -maxy)
+                            continue;
+
+                        // We have to calculate distances in pixels, not in
+                        // data units, because the scales of the axes may be different
+                        var dx = Math.abs(axisx.p2c(x) - mouseX),
+                            dy = Math.abs(axisy.p2c(y) - mouseY),
+                            dist = dx * dx + dy * dy; // we save the sqrt
+
+                        // use <= to ensure last point takes precedence
+                        // (last generally means on top of)
+                        if (dist < smallestDistance) {
+                            smallestDistance = dist;
+                            item = [i, j / ps];
+                        }
+                    }
+                }
+
+                if (s.bars.show && !item) { // no other point can be nearby
+
+                    var barLeft, barRight;
+
+                    switch (s.bars.align) {
+                        case "left":
+                            barLeft = 0;
+                            break;
+                        case "right":
+                            barLeft = -s.bars.barWidth;
+                            break;
+                        default:
+                            barLeft = -s.bars.barWidth / 2;
+                    }
+
+                    barRight = barLeft + s.bars.barWidth;
+
+                    for (j = 0; j < points.length; j += ps) {
+                        var x = points[j], y = points[j + 1], b = points[j + 2];
+                        if (x == null)
+                            continue;
+
+                        // for a bar graph, the cursor must be inside the bar
+                        if (series[i].bars.horizontal ?
+                            (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
+                             my >= y + barLeft && my <= y + barRight) :
+                            (mx >= x + barLeft && mx <= x + barRight &&
+                             my >= Math.min(b, y) && my <= Math.max(b, y)))
+                                item = [i, j / ps];
+                    }
+                }
+            }
+
+            if (item) {
+                i = item[0];
+                j = item[1];
+                ps = series[i].datapoints.pointsize;
+
+                return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
+                         dataIndex: j,
+                         series: series[i],
+                         seriesIndex: i };
+            }
+
+            return null;
+        }
+
+        function onMouseMove(e) {
+            if (options.grid.hoverable)
+                triggerClickHoverEvent("plothover", e,
+                                       function (s) { return s["hoverable"] != false; });
+        }
+
+        function onMouseLeave(e) {
+            if (options.grid.hoverable)
+                triggerClickHoverEvent("plothover", e,
+                                       function (s) { return false; });
+        }
+
+        function onClick(e) {
+            triggerClickHoverEvent("plotclick", e,
+                                   function (s) { return s["clickable"] != false; });
+        }
+
+        // trigger click or hover event (they send the same parameters
+        // so we share their code)
+        function triggerClickHoverEvent(eventname, event, seriesFilter) {
+            var offset = eventHolder.offset(),
+                canvasX = event.pageX - offset.left - plotOffset.left,
+                canvasY = event.pageY - offset.top - plotOffset.top,
+            pos = canvasToAxisCoords({ left: canvasX, top: canvasY });
+
+            pos.pageX = event.pageX;
+            pos.pageY = event.pageY;
+
+            var item = findNearbyItem(canvasX, canvasY, seriesFilter);
+
+            if (item) {
+                // fill in mouse pos for any listeners out there
+                item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
+                item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
+            }
+
+            if (options.grid.autoHighlight) {
+                // clear auto-highlights
+                for (var i = 0; i < highlights.length; ++i) {
+                    var h = highlights[i];
+                    if (h.auto == eventname &&
+                        !(item && h.series == item.series &&
+                          h.point[0] == item.datapoint[0] &&
+                          h.point[1] == item.datapoint[1]))
+                        unhighlight(h.series, h.point);
+                }
+
+                if (item)
+                    highlight(item.series, item.datapoint, eventname);
+            }
+
+            placeholder.trigger(eventname, [ pos, item ]);
+        }
+
+        function triggerRedrawOverlay() {
+            var t = options.interaction.redrawOverlayInterval;
+            if (t == -1) {      // skip event queue
+                drawOverlay();
+                return;
+            }
+
+            if (!redrawTimeout)
+                redrawTimeout = setTimeout(drawOverlay, t);
+        }
+
+        function drawOverlay() {
+            redrawTimeout = null;
+
+            // draw highlights
+            octx.save();
+            overlay.clear();
+            octx.translate(plotOffset.left, plotOffset.top);
+
+            var i, hi;
+            for (i = 0; i < highlights.length; ++i) {
+                hi = highlights[i];
+
+                if (hi.series.bars.show)
+                    drawBarHighlight(hi.series, hi.point);
+                else
+                    drawPointHighlight(hi.series, hi.point);
+            }
+            octx.restore();
+
+            executeHooks(hooks.drawOverlay, [octx]);
+        }
+
+        function highlight(s, point, auto) {
+            if (typeof s == "number")
+                s = series[s];
+
+            if (typeof point == "number") {
+                var ps = s.datapoints.pointsize;
+                point = s.datapoints.points.slice(ps * point, ps * (point + 1));
+            }
+
+            var i = indexOfHighlight(s, point);
+            if (i == -1) {
+                highlights.push({ series: s, point: point, auto: auto });
+
+                triggerRedrawOverlay();
+            }
+            else if (!auto)
+                highlights[i].auto = false;
+        }
+
+        function unhighlight(s, point) {
+            if (s == null && point == null) {
+                highlights = [];
+                triggerRedrawOverlay();
+                return;
+            }
+
+            if (typeof s == "number")
+                s = series[s];
+
+            if (typeof point == "number") {
+                var ps = s.datapoints.pointsize;
+                point = s.datapoints.points.slice(ps * point, ps * (point + 1));
+            }
+
+            var i = indexOfHighlight(s, point);
+            if (i != -1) {
+                highlights.splice(i, 1);
+
+                triggerRedrawOverlay();
+            }
+        }
+
+        function indexOfHighlight(s, p) {
+            for (var i = 0; i < highlights.length; ++i) {
+                var h = highlights[i];
+                if (h.series == s && h.point[0] == p[0]
+                    && h.point[1] == p[1])
+                    return i;
+            }
+            return -1;
+        }
+
+        function drawPointHighlight(series, point) {
+            var x = point[0], y = point[1],
+                axisx = series.xaxis, axisy = series.yaxis,
+                highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString();
+
+            if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
+                return;
+
+            var pointRadius = series.points.radius + series.points.lineWidth / 2;
+            octx.lineWidth = pointRadius;
+            octx.strokeStyle = highlightColor;
+            var radius = 1.5 * pointRadius;
+            x = axisx.p2c(x);
+            y = axisy.p2c(y);
+
+            octx.beginPath();
+            if (series.points.symbol == "circle")
+                octx.arc(x, y, radius, 0, 2 * Math.PI, false);
+            else
+                series.points.symbol(octx, x, y, radius, false);
+            octx.closePath();
+            octx.stroke();
+        }
+
+        function drawBarHighlight(series, point) {
+            var highlightColor = (typeof series.highlightColor === "string") ? series.highlightColor : $.color.parse(series.color).scale('a', 0.5).toString(),
+                fillStyle = highlightColor,
+                barLeft;
+
+            switch (series.bars.align) {
+                case "left":
+                    barLeft = 0;
+                    break;
+                case "right":
+                    barLeft = -series.bars.barWidth;
+                    break;
+                default:
+                    barLeft = -series.bars.barWidth / 2;
+            }
+
+            octx.lineWidth = series.bars.lineWidth;
+            octx.strokeStyle = highlightColor;
+
+            drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
+                    function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth);
+        }
+
+        function getColorOrGradient(spec, bottom, top, defaultColor) {
+            if (typeof spec == "string")
+                return spec;
+            else {
+                // assume this is a gradient spec; IE currently only
+                // supports a simple vertical gradient properly, so that's
+                // what we support too
+                var gradient = ctx.createLinearGradient(0, top, 0, bottom);
+
+                for (var i = 0, l = spec.colors.length; i < l; ++i) {
+                    var c = spec.colors[i];
+                    if (typeof c != "string") {
+                        var co = $.color.parse(defaultColor);
+                        if (c.brightness != null)
+                            co = co.scale('rgb', c.brightness);
+                        if (c.opacity != null)
+                            co.a *= c.opacity;
+                        c = co.toString();
+                    }
+                    gradient.addColorStop(i / (l - 1), c);
+                }
+
+                return gradient;
+            }
+        }
+    }
+
+    // Add the plot function to the top level of the jQuery object
+
+    $.plot = function(placeholder, data, options) {
+        //var t0 = new Date();
+        var plot = new Plot($(placeholder), data, options, $.plot.plugins);
+        //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
+        return plot;
+    };
+
+    $.plot.version = "0.8.3";
+
+    $.plot.plugins = [];
+
+    // Also add the plot function as a chainable property
+
+    $.fn.plot = function(data, options) {
+        return this.each(function() {
+            $.plot(this, data, options);
+        });
+    };
+
+    // round to nearby lower multiple of base
+    function floorInBase(n, base) {
+        return base * Math.floor(n / base);
+    }
+
+})(jQuery);