if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
       
		menu1.addItem("- 笔记本电脑 ","sort.asp?sort_id=1");


		menu1.addItem("- 台式电脑 ","sort.asp?sort_id=2");


		menu1.addItem("- 网络设备（Avocent） ","sort.asp?sort_id=10");


		menu1.addItem("- 打印机 ","sort.asp?sort_id=9");


		menu1.addItem("- 配 件 ","sort.asp?sort_id=8");



//第二菜单
	
		var menu2 = ms.addMenu(document.getElementById("menu2"));     
	
		menu2.addItem("- 正域动态", "news.asp?sort=正域动态"); 
		menu2.addItem("- 行业新闻", "news.asp?sort=行业新闻"); 


//第三菜单
	
		var menu3 = ms.addMenu(document.getElementById("menu3"));     
	
		menu3.addItem("  - 解决方案", "news.asp?sort=解决方案"); 
		menu3.addItem("  - 技术讲座", "news.asp?sort=技术讲座"); 
		menu3.addItem("  - 用户反馈", "online_wenda.asp"); 
		
//第四菜单
	
		var menu4 = ms.addMenu(document.getElementById("menu4"));     
	
		menu4.addItem("- 公司简介", "about.asp"); 
		menu4.addItem("- 企业文化", "wenhua.asp"); 
		menu4.addItem("- 组织架构", "zuzhi.asp");
		
	mtDropDown.renderAll();
	}