function setupRollovers() 
{ 
 if (!document.getElementsByTagName) 
	return; 
 	var all_links = document.getElementsByTagName('a'); 


	for (var i = 0; i < all_links.length; i++) 
	{ 
		var link = all_links[i]; 

		if (link.className && (' ' + link.className + ' ').indexOf(' rollover ') != -1) 
		{ 
			if (link.childNodes && 
	        	link.childNodes.length == 1 && 
	    	    link.childNodes[0].nodeName.toLowerCase() == 'img') 
				{ 
		    		link.onmouseover = mouseover; 
			        link.onmouseout = mouseout; 
	    		} 
	   } 
	   
	   		if (link.className && (' ' + link.className + ' ').indexOf(' active ') != -1)
		{
			link.onmouseover = null;
			link.onmouseout = null;
			
			var img_tag = link.childNodes[0];
			img_tag.src = img_tag.src.replace(/(\.[^.]+)$/, '-over$1');
		}

	} 
}

function findTarget(e) 
{ 
 /* Begin the DOM events part, which you */ 
 /* can ignore for now if it's confusing */ 
 var target; 

 if (window.event && window.event.srcElement) 
   target = window.event.srcElement; 
 else if (e && e.target) 
   target = e.target; 
 if (!target) 
   return null; 

 while (target != document.body && 
     target.nodeName.toLowerCase() != 'a') 
   target = target.parentNode; 

 if (target.nodeName.toLowerCase() != 'a') 
   return null; 

 return target; 
} 

function mouseover(e) { 
 var target = findTarget(e); 
 if (!target) return; 

 // the only child node of the a-tag in target will be an img-tag 
 var img_tag = target.childNodes[0]; 

 // Take the "src", which names an image called "something.ext", 
 // Make it point to "something_over.ext" 
 // This is done with a regular expression 
 img_tag.src = img_tag.src.replace(/(\.[^.]+)$/, '-over$1'); 
} 

function mouseout(e) { 
 var target = findTarget(e); 
 if (!target) return; 

 // the only child node of the a-tag in target will be an img-tag 
 var img_tag = target.childNodes[0]; 

 // Take the "src", which names an image as "something_over.ext", 
 // Make it point to "something.ext" 
 // This is done with a regular expression 
 img_tag.src = img_tag.src.replace(/-over(\.[^.]+)$/, '$1'); 
}