this.listexpander = function(){
	
	// edit 
	
	var expandTo = 1; // level up to which you want your lists to be initially expanded. 1 is minimum
	//var expandText = "Expand All"; // text for expand all button
	//var collapseText = "Collapse All"; // text for collapse all button
	var listClass = "listexpander" // class name that you want to assign to list(s). If you wish to change it make sure to update the css file as well  
	
	// end edit (do not edit below this line)
	
	this.start = function(){
		var ul = document.getElementsByTagName("ul");
		for (var i=0;i<ul.length;i++){
			if(ul[i].className == listClass){
                                create(ul[i]);
			};
		};
	};

	this.create = function(list) {	
		var items = list.getElementsByTagName("li");
		for(var i=0;i<items.length;i++){
                        listItem(items[i]);
		};
	};	

	this.listItem = function(li){
                if(li.getElementsByTagName("ul").length > 0){
			var ul = li.getElementsByTagName("ul")[0];
			ul.style.display = (depth(ul) <= expandTo) ? "block" : "none";
			li.className = (depth(ul) <= expandTo) ? "expanded" : "collapsed";
			li.over = true;	
			ul.onmouseover = function(){li.over = false;} 
			ul.onmouseout = function(){li.over = true;} 
			li.onclick = function(){
   	                             if(this.over){
				        ul.style.display = (ul.style.display == "none") ? "block" : "none";
					this.className = (ul.style.display == "none") ? "collapsed" : "expanded";
                                     };
			};
		};
	};

	this.depth = function(obj){
		var level = 1;
		while(obj.parentNode.className != listClass){
			if (obj.tagName == "UL") level++;
			obj = obj.parentNode;
		};
		return level;
	};	
	
	start();

};






window.onload = listexpander;