var imgError = new Class({
	initialize:function(e,imagen){	
		if(!e){ e = $(document.body); };	
		var imgs = e.getElements('img');
		imgs.each(function(item){
			var tempImg = new Element('img', {'src':item.src})
			tempImg.addEvent('error',function(){
				item.src=imagen;
			});			
		})		
	},
});