if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 公司简介","about.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- 联系我们","Contact.asp");	
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 企业新闻", "news.asp"); 
		menu2.addItem("- 业内资讯", "yenews.asp"); // send no URL if nothing should happen onclick
	
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 产品展示", "Product.asp");
		menu3.addItem("- 产品分类", "Products.asp");
	    menu3.addItem("- 产品搜索", "search.asp");
	
		mtDropDown.renderAll();
	}