var preloaded = [];
for (var i = 1; i <= 6; i++) {
	preloaded[i] = [loadImage(i + "_up.gif"), loadImage(i + "_down.gif")];
}
function init() {
	mtDropDown.initialize();	// whatever stuff you need to do onload goes here.
	//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) };			
}
function loadImage(sFilename) {
	var img = new Image();
	img.src ="Media/images/" + sFilename;
	return img;
}
function swapImage(imgName, sFilename) {
	document.images[imgName].src = sFilename;
}