var request={
	requestHtml: function(url, type, el, data) {
		var r=new Request.HTML({url:url,
			onSuccess:	function(html) {
				el.set('text', '');
				el.adopt(html);
			}
		});
		
		r.send("request="+type + (data!=null ? "&"+data : ""));
		
	}
}