//Helper Functions

	function hasClass(ele,cls) {
		return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
	}

	function addClass(ele,cls) {
		if (!hasClass(ele,cls)) ele.className += " "+cls;
	}
	
	function removeClass(ele,cls) {
		if (hasClass(ele,cls)) {
	    	var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
			ele.className=ele.className.replace(reg,' ');
		}
	}

	function addLoadEvent(func) {
  		var oldonload = window.onload;
  		if (typeof window.onload != 'function') {
  		  	window.onload = func;
  		} else {
  			window.onload = function() {
    	  		oldonload();
      	  		func();
    		}
  		}
	}

// End Helper Functions

(function(){

	// check dom compatibility
	var W3CDOM = document.getElementsByTagName && document.createElement;
	if(!W3CDOM) return

// Start Custom Script

	function handleMouseovers(id) {
		var links = document.getElementById(id).getElementsByTagName("a");
		var imgLoad = []
	
		for(var i = 0; i < links.length; i++) {
			attachBehavior(links[i], i);
		}

		function attachBehavior(obj, iter) {
			
			var img = obj.getElementsByTagName('img')[0];
			if (!img) return;
			var imgSrc = img.getAttribute("src");
			var ext = imgSrc.match(/\.\S{3}$/);
			var overSrc = imgSrc.replace(ext, "-over" + ext);
			
			imgLoad[iter] = new Image();
			imgLoad[iter].src = overSrc
			
			obj.onmouseover = function(){
				img.setAttribute("src", overSrc);
			}
			obj.onmouseout = function(){
				img.setAttribute("src", imgSrc);
			}
			
		}
	}
	
	


})();