if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 期刊简介","../column/column79.shtml"); // send no URL if nothing should happen onclick
		menu1.addItem("- 历史回眸","../column/column100.shtml"); // send no URL if nothing should happen onclick
		menu1.addItem("- 主编致词","../column/column101.shtml");
		menu1.addItem("- 栏目总览","../column/column102.shtml");
		menu1.addItem("- 期刊团队","../column/column80.shtml");
		menu1.addItem("- 联系我们","../column/column86.shtml");	
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 广告服务", "../column/column83.shtml"); 
		menu2.addItem("- 栏目协办", "../column/column103.shtml"); // send no URL if nothing should happen onclick
		menu2.addItem("- 理事会员", "../column/column104.shtml"); 
		
//第三菜单
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 投稿须知", "../column/column81.shtml"); 
		menu3.addItem("- 征稿简则", "../column/column106.shtml"); // send no URL if nothing should happen onclick
		menu3.addItem("- 特邀专栏", "../column/column107.shtml");
		
	
		mtDropDown.renderAll();
	}