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) {
		ArboristSvc_over = newImage("/Images/Nav/ArboristSvc-over.gif");
		CompInfo_over = newImage("/Images/Nav/CompInfo-over.gif");
		ConstSvc_over = newImage("/Images/Nav/ConstSvc-over.gif");
		ContactUs_over = newImage("/Images/Nav/ContactUs-over.gif");
		DesignSvc_over = newImage("/Images/Nav/DesignSvc-over.gif");
		Home_over = newImage("/Images/Nav/Home-over.gif");
		MaintSvc_over = newImage("/Images/Nav/MaintSvc-over.gif");
		Portfolio_over = newImage("/Images/Nav/Portfolio-over.gif");
		preloadFlag = true;
	}
}