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

var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("板材类",	"/index.php/text/yinfeng/1/cn/515/506.html","");
menu4.addItem("工艺雕刻类",	"/index.php/text/yinfeng/1/cn/516/506.html","");
menu4.addItem("鹅卵石 ",	"/index.php/text/yinfeng/1/cn/517/506.html","");
menu4.addItem("砂岩",	"/index.php/text/yinfeng/1/cn/518/506.html","");
var	menu5	=	ms.addMenu(document.getElementById("mainmenu5"));
menu5.addItem("功能疗效",	"/index.php/text/yinfeng/1/cn/512/507.html","");
menu5.addItem("适用人群",	"/index.php/text/yinfeng/1/cn/513/507.html","");
menu5.addItem("使用说明",	"/index.php/text/yinfeng/1/cn/514/507.html","");

			mtDropDown.renderAll();
		}
		//初始菜单
		window.onload = init;