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) {
		abouttaleover = newImage("images/navbar/abouttaleover.gif");
		hotoakover = newImage("images/navbar/hotoakover.gif");
		hotwoodover = newImage("images/navbar/hotwoodover.gif");
		hotsunderover = newImage("images/navbar/hotsunderover.gif");
		hotmeruover = newImage("images/navbar/hotmeruover.gif");
		contusover = newImage("images/navbar/contusover.gif");
		preloadFlag = true;
	}
}