<!--
//dropdown_initialize.js
var preloaded = [];
for (var i = 1; i <= 5; i++) {
	preloaded[i] = [loadImage(i + "-1.gif"), loadImage(i + "-2.gif")];		//设置图片的OnMouseOver和OnMouseOut的路径
}

function init() {
	if (mtDropDown.isSupported()) {
		mtDropDown.initialize();
		menu1.onactivate = function() { swapImage("button1", preloaded[1][1].src) };
   	menu1.ondeactivate = function() { swapImage("button1", preloaded[1][0].src) };

//		menu2.onactivate = function() { swapImage("button2", preloaded[2][1].src) };
//		menu2.ondeactivate = function() { swapImage("button2", preloaded[2][0].src) };

//		menu3.onactivate = function() { swapImage("button3", preloaded[3][1].src) };
//		menu3.ondeactivate = function() { swapImage("button3", preloaded[3][0].src) };

//		menu4.onactivate = function() { swapImage("button4", preloaded[4][1].src) };
//		menu4.ondeactivate = function() { swapImage("button4", preloaded[4][0].src) };

//		menu5.onactivate = function() { swapImage("button5", preloaded[5][1].src) };
//		menu5.ondeactivate = function() { swapImage("button5", preloaded[5][0].src) };

//		menu6.onactivate = function() { swapImage("button6", preloaded[6][1].src) };
//		menu6.ondeactivate = function() { swapImage("button6", preloaded[6][0].src) };

//		menu7.onactivate = function() { swapImage("button7", preloaded[7][1].src) };
//		menu7.ondeactivate = function() { swapImage("button7", preloaded[7][0].src) };
				
//		menu8.onactivate = function() { swapImage("button8", preloaded[8][1].src) };
//		menu8.ondeactivate = function() { swapImage("button8", preloaded[8][0].src) };
	}
}

function loadImage(sFilename) {
	var img = new Image();
		img.src ="" + sFilename;
	return img;
}

function swapImage(imgName, sFilename) {
	document.images[imgName].src = sFilename;
}
//-->