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) {
		toplogo1 = newImage("/_images/rev12/purp_tmp_1.jpg");
		toplogo2 = newImage("/_images/rev12/purp_tmp_2.jpg");
		toplogo3 = newImage("/_images/rev12/purp_tmp_3.jpg");
		toplogo4 = newImage("/_images/rev12/purp_tmp_4.jpg");
		topnav_bg = newImage("/_images/rev12/purp_tmp_5.jpg");
		page_bg = newImage("/_images/rev12/purp_tmp_bg.jpg");
		logobottom = newImage("/_images/rev12/alstopbottom.jpg");
		topnav_bg = newImage("/_images/pink_bg.gif");
		preloadFlag = true;
	}
}