if (mtDropDown.isSupported()) {

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

		
	
		
	
//第二菜单
		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 企业简介", "about.asp?title=企业简介"); 
		menu1.addItem("- 企业文化", "about.asp?title=企业文化");
		menu1.addItem("- 荣誉证书", "about.asp?title=荣誉证书");
		

	// menu : 5
	
			mtDropDown.renderAll();

	}