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) {
		wui_sod_over = newImage("image/wui-sod-over.gif");
		wui_erosion_over = newImage("image/wui-erosion-over.gif");
		wui_mst_over = newImage("image/wui-mst-over.gif");
		wui_t_wui_sod_over = newImage("image/wui-t-wui-sod-over.gif");
		wui_bid_over = newImage("image/wui-bid-over.gif");
		wui_specs_over = newImage("image/wui-specs-over.gif");
		wui_washed_over = newImage("image/wui-washed-over.gif");
		wui_projects_over = newImage("image/wui-projects-over.gif");
		wui_home_over = newImage("image/wui-home-over.gif");
		wui_contact_over = newImage("image/wui-contact-over.gif");
		preloadFlag = true;
	}
}