if (mtDropDown.isSupported()) {

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

       var menu1 = ms.addMenu(document.getElementById("menu1"));
       menu1.addItem("  Company Info  ", "zhtml_1.htm");
       menu1.addItem("  Company Culture  ", "zhtml_12.htm");
	   menu1.addItem("  Company Honor  ", "zhtml_19.htm");
  
       var menu2 = ms.addMenu(document.getElementById("menu2"));
       menu2.addItem("  New Products  ", "zpro_list_4_1.htm");
       menu2.addItem("  Product List  ", "zpro_list_1_1.htm");
       menu2.addItem("  Color Card  ", "zpro_list_14_1.htm");
  
       mtDropDown.renderAll();
}