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



var menu2 = ms.addMenu(document.getElementById("menu2"));
menu2.addItem("    行业资讯" , "/cnhtml/news/1/newssort-1.html" );
menu2.addItem("    公司新闻" , "/cnhtml/news/2/newssort-2.html" );
menu2.addItem("    工程技术" , "/cnhtml/news/3/newssort-3.html" );
menu2.addItem("    工程方案" , "/cnhtml/news/5/newssort-5.html" );


var menu4 = ms.addMenu(document.getElementById("menu4"));
menu4.addItem("    产品说明书" , "#" );
menu4.addItem("    驱动程序" , "#" );








		mtDropDown.renderAll();
	}