addLoadEvent(function()
{
	var aLinks=document.getElementsByTagName("a");
	for(var i=0; i<aLinks.length;i++) {
		var sExtension = aLinks[i].href.substr(aLinks[i].href.lastIndexOf(".") + 1);
		if(sExtension == "jpg" || sExtension == "jpeg" || sExtension == "gif" || sExtension == "png") {
			aLinks[i].setAttribute("rel", "lightbox");
		} 
	}
});