if (mtdropdown.issupported()) {

		var ms = new mtdropdownset(mtdropdown.direction.down, 0, 0, mtdropdown.reference.bottomleft);

		var menu2 = ms.addmenu(document.getelementbyid("menu2"));
		menu2.additem("  公司简介", "about_us.php?cid=6");
		menu2.additem("  企业文化", "about_us.php?cid=23");
		
		var menu3 = ms.addmenu(document.getelementbyid("menu3"));
		menu3.additem("  有限公司注册", "news1.php?cid=31");
		menu3.additem("  分公司注册", "news1.php?cid=32");
		menu3.additem("  芜湖双高认定", "news1.php?cid=33");
		menu3.additem("  海外公司注册", "news1.php?cid=34");
		menu3.additem("  商标注册代理", "news1.php?cid=35");
		menu3.additem("  芜湖项目申报", "news1.php?cid=36");
		 
		var menu4 = ms.addmenu(document.getelementbyid("menu4"));
		menu4.additem("  代理记账", "news.php?cid=12");
		menu4.additem("  税务服务", "news.php?cid=21");
		
		var menu7 = ms.addmenu(document.getelementbyid("menu7"));
		menu7.additem("  客户留言", "msg.php");
		menu7.additem("  已解决问题", "msg1.php");
		
		mtdropdown.renderall();
	}