Make Range methods to work with detached node

LayoutTests/fast/dom/Range/script-tests/range-exceptions.js

 description(
 "This test checks some DOM Range exceptions."
 );
 
 // Test to be sure the name BAD_BOUNDARYPOINTS_ERR dumps properly.
 var node = document.createElement("DIV");
 node.innerHTML = "<BAR>AB<MOO>C</MOO>DE</BAR>";
 shouldBe("node.innerHTML", "'<bar>AB<moo>C</moo>DE</bar>'");
-var range = document.createRange();
-range.setStart(node.firstChild, 1);
-range.setEnd(node.firstChild, 2);
-var foo = document.createElement("FOO");
-shouldBe("foo.outerHTML", "'<foo></foo>'");
-shouldThrow("range.surroundContents(foo)");
 
 // Ensure that we throw BAD_BOUNDARYPOINTS_ERR when trying to split a comment
 // (non-text but character-offset node). (Test adapted from Acid3.)
 var c1 = document.createComment("aaaaa");
 node.appendChild(c1);
 var c2 = document.createComment("bbbbb");
 node.appendChild(c2);
 var r = document.createRange();
 r.setStart(c1, 2);
 r.setEnd(c2, 3);
 shouldThrow("r.surroundContents(document.createElement('a'))", '"InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable."');
 
 // But not when we don't try to split the comment.
 r.setStart(c1, 0);
 r.setEnd(c1, 5);
 shouldThrow("r.surroundContents(document.createElement('a'))", '"HierarchyRequestError: A Node was inserted somewhere it doesn\'t belong."');