function pop_photo(url){
		var new_photo;
		var height = 500;
		var width = 600;
		var left = Math.floor( (screen.width - width) / 2);
		var top = 0;	
		//var top = Math.floor( (screen.height - height) / 2);	
		var open_win = "top=" + top + ",left=" + left + ",height=" + height + ",width=" + width +",resizable=false,scrollbars=no,toolbar=no,menubar=no,status=no";

		new_photo=window.open(url,'photo',open_win);
		if (window.focus) {
			new_photo.focus()
		}
	}