npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.4.0/bower_components/web-animations-js/tutorial/page-load.js

 /*
  * Copyright 2013 Google Inc. All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
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 var findDivNum = function() {
   var value = document.getElementById('animNum').innerHTML;
   value = parseInt(value);
   return value;
 }
 
 // Generate 'a', 'b', 'c', 'd'... to put in as id.
 var nextId = function(currentId) {
   return String.fromCharCode(currentId.charCodeAt() + 1);
 }