if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem(" - 钰龙简介","asp-bin/GB/?page=1&id=6"); // send no URL if nothing should happen onclick
		menu1.addItem(" - 公司文化","asp-bin/GB/?page=1&id=51"); // send no URL if nothing should happen onclick
		menu1.addItem("-钰龙大事记","asp-bin/GB/?page=1&id=74");
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem(" - 最新消息", "asp-bin/GB/?page=7&class=49&Catalog=16"); 
		menu2.addItem(" - 活动花絮", "asp-bin/GB/?page=7&class=75&Catalog=16"); // send no URL if nothing should happen onclick
	
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem(" - 成功案例", "asp-bin/GB/?page=12&Catalog=41");
		menu3.addItem(" - 合作伙伴", "asp-bin/GB/?page=13&Catalog=41");
		
		// menu : 4
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem(" - 活动项目", "asp-bin/GB/?page=6&Catalog=36");
		menu4.addItem(" - 商务酒会", "asp-bin/GB/?page=6&Catalog=39");
		menu4.addItem(" - 婚庆宴会", "asp-bin/GB/?page=6&Catalog=72");
		menu4.addItem(" - 演出经纪", "asp-bin/GB/?page=6&Catalog=71");
		menu4.addItem(" - 场地布置", "asp-bin/GB/?page=6&Catalog=40");
		menu4.addItem(" - 广告设计", "asp-bin/GB/?page=6&Catalog=134");
		menu4.addItem(" - 彩球艺术", "asp-bin/GB/?page=6&Catalog=43");
		menu4.addItem(" - 奖牌礼品", "asp-bin/GB/?page=2&Catalog=11");
	
		mtDropDown.renderAll();
	}