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



var menu2 = ms.addMenu(document.getElementById("menu2"));
menu2.addItem("    公司新闻", "newssort-1.aspx" );
menu2.addItem("    行业新闻", "newssort-2.aspx" );

var menu3 = ms.addMenu(document.getElementById("menu3"));
menu3.addItem("    眼镜板", "productsort-1.aspx" );
menu3.addItem("    切割环", "productsort-2.aspx" );
menu3.addItem("    S管阀", "productsort-3.aspx" );

var menu4 = ms.addMenu(document.getElementById("menu4"));
menu4.addItem("    程序下载", "/down.aspx-1.aspx" );
menu4.addItem("    图片下载", "/down.aspx-2.aspx" );
menu4.addItem("    合同下载", "/down.aspx-3.aspx" );







		mtDropDown.renderAll();
	}