var preloaded = [];

for (var i = 1; i <= 4; i++) {
	preloaded[i] = [loadImage("nav_"+i+"a.gif"), loadImage("nav_"+i+"a.gif")];
}

function init() {

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



	}
}

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

function swapImage(imgName, sFilename) {
	var imgName = imgName+1;
	alert(imgName);
	document.images[imgName].src = sFilename;
}