var mtevent = {
	popup:function(url,w,h){
		var left = (screen.width-w)/2;
		var top = (screen.height-h)/2;
		var params = 'width='+w+',height='+h+',top='+top+',left='+left;
		window.open(url,'demo',params);
	},
	load:function(url,id){
		new Ajax.Updater(
			id,
			 url,
			 {
			 	method: 'get',
				parameters: null
			 });
	}
}