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

var	menu1	=	ms.addMenu(document.getElementById("mainmenu1"));
menu1.addItem("ve chung toi 公司介绍",	"?action=text|stc3691|2381|cn|21818|1","_blank");
menu1.addItem("lien he 联系 ",	"?action=text|stc3691|2381|cn|21821|1","_blank");
menu1.addItem("mang van dien tu ",	"?action=list|stc3691|2381|cn|25881|1","_blank");
var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("hoa chat an mon kinh",	"?action=list|stc3691|2381|cn|14227|12671","_blank");
menu2.addItem("chat on dinh nhiet",	"?action=list|stc3691|2381|cn|14228|12671","_blank");
var	menu3	=	ms.addMenu(document.getElementById("mainmenu3"));
menu3.addItem("may cat/han",	"?action=list|stc3691|2381|cn|12997|12989","_blank");
menu3.addItem("nguon dien",	"?action=list|stc3691|2381|cn|18242|12989","_blank");
menu3.addItem("khoa cac loai",	"?action=text|stc3691|2381|cn|27423|12989","_blank");
menu3.addItem("may PCB",	"?action=list|stc3691|2381|cn|29537|12989","_blank");
menu3.addItem("may SMT",	"?action=list|stc3691|2381|cn|29538|12989","_blank");
menu3.addItem("may han chip BGA",	"?action=list|stc3691|2381|cn|29552|12989","_blank");
var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("panel pin mat troi",	"?action=list|stc3691|2381|cn|13003|12991","_blank");
menu4.addItem("he thong phat dien NL mat troi",	"?action=list|stc3691|2381|cn|13263|12991","_blank");
menu4.addItem("may phat dien bang gio",	"?action=list|stc3691|2381|cn|13264|12991","_blank");
menu4.addItem("Inverter Nang luong mat troi",	"?action=text|stc3691|2381|cn|29950|12991","_blank");
menu4.addItem("Acquy Nang luong mat troi",	"?action=text|stc3691|2381|cn|29951|12991","_blank");
menu4.addItem("On ap",	"?action=text|stc3691|2381|cn|29972|12991","_blank");
menu4.addItem("Den chieu sang NL mat troi",	"?action=list|stc3691|2381|cn|33644|12991","_blank");
var	menu5	=	ms.addMenu(document.getElementById("mainmenu5"));
menu5.addItem("He thong thu thap du lieu",	"?action=list|stc3691|2381|cn|26660|13260","_blank");
menu5.addItem("Dong ho thong minh",	"?action=list|stc3691|2381|cn|26662|13260","_blank");
menu5.addItem("cam bien cong suat",	"?action=list|stc3691|2381|cn|26665|13260","_blank");
menu5.addItem("bien tan",	"?action=text|stc3691|2381|cn|29363|13260","_blank");

			mtDropDown.renderAll();
		}
		//��ʼ�˵�
		window.onload = init;