var preloaded = [];

		for (var i = 1; i <= 7; i++) {
			preloaded[i] = [loadImage(i + "_0.gif"), loadImage(i + "_1.gif")];
		}

		function init() {

			if (mtDropDown.isSupported()) {
				mtDropDown.initialize();
			}
		}

		function loadImage(sFilename) {
			var img = new Image();
			img.src ="" + sFilename;
			return img;
		}

		function swapImage(imgName, sFilename) {
			document.images[imgName].src = sFilename;
		}



	if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 2  , mtDropDown.reference.bottomLeft);

		// 关于海创周
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("活动介绍&nbsp;&nbsp;&nbsp;&nbsp;|", "activity.do?pa=Details&type=101");
		menu3.addItem("历届回顾&nbsp;&nbsp;&nbsp;&nbsp;|", "activity.do?pa=history&type=500");
		menu3.addItem("活动照片&nbsp;&nbsp;&nbsp;&nbsp;|", "activePhoto.do?pa=List");
		menu3.addItem("组织机构&nbsp;&nbsp;&nbsp;&nbsp;", "activity.do?pa=DetailsZuZhi&type=206");

		// 人才.项目
		var menu5 = ms.addMenu(document.getElementById("menu5"));
		menu5.addItem("海外人才资讯&nbsp;&nbsp;&nbsp;|", "peopleBasic.do?pa=List");
		menu5.addItem("海外项目资讯&nbsp;&nbsp;&nbsp;|", "project.do?pa=List");
		menu5.addItem("参会团队资讯&nbsp;&nbsp;&nbsp;", "conferenceTeam.do");
        
		mtDropDown.renderAll();
	}