function showDetail(id, level) {
		var path=''; 
		switch (level) {
			case 0: //reference from top level page
				path='calendar/';
				break;
			case 1: //reference from second level page
				path='../calendar/';
				break;
			case 99: //special case in root folder
				path='';
				break;
		}
		var detail = window.open(path + 'calendar_item.aspx?ID=' + id ,'','width=400,height=300,top=200,left=300,scrollbars,resizable,title=no');detail.focus(); 
	}