--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/django/js/getElementsBySelector.js	Mon Apr 06 03:10:59 2009 +0000
@@ -0,0 +1,167 @@
+/* document.getElementsBySelector(selector)
+   - returns an array of element objects from the current document
+     matching the CSS selector. Selectors can contain element names, 
+     class names and ids and can be nested. For example:
+     
+       elements = document.getElementsBySelect('div#main p a.external')
+     
+     Will return an array of all 'a' elements with 'external' in their 
+     class attribute that are contained inside 'p' elements that are 
+     contained inside the 'div' element which has id="main"
+
+   New in version 0.4: Support for CSS2 and CSS3 attribute selectors:
+   See http://www.w3.org/TR/css3-selectors/#attribute-selectors
+
+   Version 0.4 - Simon Willison, March 25th 2003
+   -- Works in Phoenix 0.5, Mozilla 1.3, Opera 7, Internet Explorer 6, Internet Explorer 5 on Windows
+   -- Opera 7 fails 
+*/
+
+function getAllChildren(e) {
+  // Returns all children of element. Workaround required for IE5/Windows. Ugh.
+  return e.all ? e.all : e.getElementsByTagName('*');
+}
+
+document.getElementsBySelector = function(selector) {
+  // Attempt to fail gracefully in lesser browsers
+  if (!document.getElementsByTagName) {
+    return new Array();
+  }
+  // Split selector in to tokens
+  var tokens = selector.split(' ');
+  var currentContext = new Array(document);
+  for (var i = 0; i < tokens.length; i++) {
+    token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');;
+    if (token.indexOf('#') > -1) {
+      // Token is an ID selector
+      var bits = token.split('#');
+      var tagName = bits[0];
+      var id = bits[1];
+      var element = document.getElementById(id);
+      if (tagName && element.nodeName.toLowerCase() != tagName) {
+        // tag with that ID not found, return false
+        return new Array();
+      }
+      // Set currentContext to contain just this element
+      currentContext = new Array(element);
+      continue; // Skip to next token
+    }
+    if (token.indexOf('.') > -1) {
+      // Token contains a class selector
+      var bits = token.split('.');
+      var tagName = bits[0];
+      var className = bits[1];
+      if (!tagName) {
+        tagName = '*';
+      }
+      // Get elements matching tag, filter them for class selector
+      var found = new Array;
+      var foundCount = 0;
+      for (var h = 0; h < currentContext.length; h++) {
+        var elements;
+        if (tagName == '*') {
+            elements = getAllChildren(currentContext[h]);
+        } else {
+            try {
+                elements = currentContext[h].getElementsByTagName(tagName);
+            }
+            catch(e) {
+                elements = [];
+            }
+        }
+        for (var j = 0; j < elements.length; j++) {
+          found[foundCount++] = elements[j];
+        }
+      }
+      currentContext = new Array;
+      var currentContextIndex = 0;
+      for (var k = 0; k < found.length; k++) {
+        if (found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b'))) {
+          currentContext[currentContextIndex++] = found[k];
+        }
+      }
+      continue; // Skip to next token
+    }
+    // Code to deal with attribute selectors
+    if (token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/)) {
+      var tagName = RegExp.$1;
+      var attrName = RegExp.$2;
+      var attrOperator = RegExp.$3;
+      var attrValue = RegExp.$4;
+      if (!tagName) {
+        tagName = '*';
+      }
+      // Grab all of the tagName elements within current context
+      var found = new Array;
+      var foundCount = 0;
+      for (var h = 0; h < currentContext.length; h++) {
+        var elements;
+        if (tagName == '*') {
+            elements = getAllChildren(currentContext[h]);
+        } else {
+            elements = currentContext[h].getElementsByTagName(tagName);
+        }
+        for (var j = 0; j < elements.length; j++) {
+          found[foundCount++] = elements[j];
+        }
+      }
+      currentContext = new Array;
+      var currentContextIndex = 0;
+      var checkFunction; // This function will be used to filter the elements
+      switch (attrOperator) {
+        case '=': // Equality
+          checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
+          break;
+        case '~': // Match one of space seperated words 
+          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
+          break;
+        case '|': // Match start with value followed by optional hyphen
+          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
+          break;
+        case '^': // Match starts with value
+          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
+          break;
+        case '$': // Match ends with value - fails with "Warning" in Opera 7
+          checkFunction = function(e) { return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length); };
+          break;
+        case '*': // Match ends with value
+          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) > -1); };
+          break;
+        default :
+          // Just test for existence of attribute
+          checkFunction = function(e) { return e.getAttribute(attrName); };
+      }
+      currentContext = new Array;
+      var currentContextIndex = 0;
+      for (var k = 0; k < found.length; k++) {
+        if (checkFunction(found[k])) {
+          currentContext[currentContextIndex++] = found[k];
+        }
+      }
+      // alert('Attribute Selector: '+tagName+' '+attrName+' '+attrOperator+' '+attrValue);
+      continue; // Skip to next token
+    }
+    // If we get here, token is JUST an element (not a class or ID selector)
+    tagName = token;
+    var found = new Array;
+    var foundCount = 0;
+    for (var h = 0; h < currentContext.length; h++) {
+      var elements = currentContext[h].getElementsByTagName(tagName);
+      for (var j = 0; j < elements.length; j++) {
+        found[foundCount++] = elements[j];
+      }
+    }
+    currentContext = found;
+  }
+  return currentContext;
+}
+
+/* That revolting regular expression explained 
+/^(\w+)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/
+  \---/  \---/\-------------/    \-------/
+    |      |         |               |
+    |      |         |           The value
+    |      |    ~,|,^,$,* or =
+    |   Attribute 
+   Tag
+*/