var gal = { 
init : function() { 
if (!document.getElementById || !document.createElement || !document.appendChild) return false; 
if (document.getElementById('gallery')) document.getElementById('gallery').id = 'jgal'; 
var li = document.getElementById('jgal').getElementsByTagName('li');
li[0].className = 'active'; 

for (i=0; i<li.length; i++) { 

	var newStr = new String( li[i].getElementsByTagName('img')[0].src);
	var strippedUrl = newStr.substr(0,newStr.lastIndexOf("."));
	strippedUrl += "_thumb.jpg";
	li[i].style.backgroundImage = 'url(' + strippedUrl + ')';
	li[i].title = li[i].getElementsByTagName('img')[0].alt; 
	gal.addEvent(li[i],'click',function() { 

var im = document.getElementById('jgal').getElementsByTagName('li'); 
	for (j=0; j<im.length; j++) { 
	im[j].className = ''; 
	} 
	this.className = 'active'; 
	}); 
	} 
	}, 
	addEvent : function(obj, type, fn) { 
	if (obj.addEventListener) { 
	obj.addEventListener(type, fn, false); 
	} 
	else if (obj.attachEvent) { 
	obj["e"+type+fn] = fn; 
	obj[type+fn] = function() { obj["e"+type+fn]( window.event ); } 
	obj.attachEvent("on"+type, obj[type+fn]); 
	} 
	} 
	} 
gal.addEvent(window,'load', function() { 
gal.init(); 
});