window.addEvent('domready', function(){
	if($chk($('prev-foto'))){
		//alert("hola");
		var fotos = $('prev-foto').rel.split("#");
		var n = 0;
		var curr = "";
		$('prev-foto').addEvent('click', function(ev){
			ev = new Event(ev).stop();
			if(fotos[n - 1]){
				curr = $('foto').getStyle('background-image').replace(/\"/g, "");
				$('foto').setStyle('background-image', curr.replace(curr.substring(curr.length - 13), fotos[n - 1] + ".jpg)").replace("\"", "").replace("\'", ""));
				n--;
			}
		});
		$('next-foto').addEvent('click', function(ev){
			ev = new Event(ev).stop();
			if(fotos[n + 1]){
				curr = $('foto').getStyle('background-image').replace(/\"/g, "");
				//curr = curr.replace('"', "");
				//alert(curr);
				$('foto').setStyle('background-image', curr.replace(curr.substring(curr.length - 13), fotos[n + 1] + ".jpg)"));
				//alert(curr.replace(curr.substring(curr.length - 13), fotos[n + 1] + ".jpg)").replace("\"", "").replace("\'", ""));
				n++;
			}
		});
	}
});