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) {
		nav_home_over = newImage("/files/nav_home-over.gif");
		nav_screenprinting_over = newImage("/files/nav_screenprinting-over.gif");
		nav_waterbased_over = newImage("/files/nav_waterbased-over.gif");
		nav_embroidery_over = newImage("/files/nav_embroidery-over.gif");
		nav_onlinecat_over = newImage("/files/nav_onlinecat-over.gif");
		nav_signs_over = newImage("/files/nav_signs-over.gif");
		nav_graphicdesign_over = newImage("/files/nav_graphicdesign-over.gif");
		nav_contact_over = newImage("/files/nav_contact-over.gif");
		preloadFlag = true;
	}
}