function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		TopNav_Home_over = newImage("images/TopNav-Home.gif");
		TopNav_News_over = newImage("images/TopNav-News.gif");
		TopNav_Events_over = newImage("images/TopNav-Events.gif");
		TopNav_MemberDirectory_over = newImage("images/TopNav-MemberDirectory.gif");
		TopNav_Links_over = newImage("images/TopNav-Links.gif");
		TopNav_Leadership_over = newImage("images/TopNav-Leadership.igf");
		TopNav_ACGGlobal_over = newImage("images/TopNav-ACGGlobal.jpg");
		TopNav_Join_over = newImage("images/TopNav-Join.jpg");
		TopNav_ContactACG_over = newImage("images/TopNav-ContactACG.jpg");
		preloadFlag = true;
	}
}