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From 2011.igem.org

// script.aculo.us builder.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010

// Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) // // script.aculo.us is freely distributable under the terms of an MIT-style license. // For details, see the script.aculo.us web site: http://script.aculo.us/

var Builder = {

 NODEMAP: {
   AREA: 'map',
   CAPTION: 'table',
   COL: 'table',
   COLGROUP: 'table',
   LEGEND: 'fieldset',
   OPTGROUP: 'select',
   OPTION: 'select',
   PARAM: 'object',
   TBODY: 'table',
   TD: 'table',
   TFOOT: 'table',
   TH: 'table',
   THEAD: 'table',
   TR: 'table'
 },
 // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
 //       due to a Firefox bug
 node: function(elementName) {
   elementName = elementName.toUpperCase();

   // try innerHTML approach
   var parentTag = this.NODEMAP[elementName] || 'div';
   var parentElement = document.createElement(parentTag);
   try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
     parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
   } catch(e) {}
   var element = parentElement.firstChild || null;

   // see if browser added wrapping tags
   if(element && (element.tagName.toUpperCase() != elementName))
     element = element.getElementsByTagName(elementName)[0];

   // fallback to createElement approach
   if(!element) element = document.createElement(elementName);

   // abort if nothing could be created
   if(!element) return;

   // attributes (or text)
   if(arguments[1])
     if(this._isStringOrNumber(arguments[1]) ||
       (arguments[1] instanceof Array) ||
       arguments[1].tagName) {
         this._children(element, arguments[1]);
       } else {
         var attrs = this._attributes(arguments[1]);
         if(attrs.length) {
           try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
             parentElement.innerHTML = "<" +elementName + " " +
               attrs + "></" + elementName + ">";
           } catch(e) {}
           element = parentElement.firstChild || null;
           // workaround firefox 1.0.X bug
           if(!element) {
             element = document.createElement(elementName);
             for(attr in arguments[1])
               element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
           }
           if(element.tagName.toUpperCase() != elementName)
             element = parentElement.getElementsByTagName(elementName)[0];
         }
       }

   // text, or array of children
   if(arguments[2])
     this._children(element, arguments[2]);

    return $(element);
 },
 _text: function(text) {
    return document.createTextNode(text);
 },

 ATTR_MAP: {
   'className': 'class',
   'htmlFor': 'for'
 },

 _attributes: function(attributes) {
   var attrs = [];
   for(attribute in attributes)
     attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
         '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'"') + '"');
   return attrs.join(" ");
 },
 _children: function(element, children) {
   if(children.tagName) {
     element.appendChild(children);
     return;
   }
   if(typeof children=='object') { // array can hold nodes and text
     children.flatten().each( function(e) {
       if(typeof e=='object')
         element.appendChild(e);
       else
         if(Builder._isStringOrNumber(e))
           element.appendChild(Builder._text(e));
     });
   } else
     if(Builder._isStringOrNumber(children))
       element.appendChild(Builder._text(children));
 },
 _isStringOrNumber: function(param) {
   return(typeof param=='string' || typeof param=='number');
 },
 build: function(html) {
   var element = this.node('div');
   $(element).update(html.strip());
   return element.down();
 },
 dump: function(scope) {
   if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope

   var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
     "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
     "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
     "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
     "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
     "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);

   tags.each( function(tag){
     scope[tag] = function() {
       return Builder.node.apply(Builder, [tag].concat($A(arguments)));
     };
   });
 }

};