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","aboutus.asp");  	
		menu1.addItem("- 三优新闻","News.asp?stype=news");  	
		menu1.addItem("- 三优大事","News.asp?stype=events");  	
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 与厦大合作","research.asp?stype=xmu");  	
		menu2.addItem("- 研发项目","research.asp?stype=item");  	
		menu2.addItem("- 测试中心","research.asp?stype=test");  	
		mtDropDown.renderAll();
		
	}