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) {
		ui_nav_home_20 = newImage("image/ui-nav-home_20.gif");
		ui_nav_about_21 = newImage("image/ui-nav-about_21.gif");
		ui_nav_membership_22 = newImage("image/ui-nav-membership_22.gif");
		ui_nav_government_23 = newImage("image/ui-nav-government_23.gif");
		ui_nav_events_24 = newImage("image/ui-nav-events_24.gif");
		ui_nav_relocation_25 = newImage("image/ui-nav-relocation_25.gif");
		ui_nav_resources_26 = newImage("image/ui-nav-resources_26.gif");
		ui_nav_calendar_27 = newImage("image/ui-nav-calendar_27.gif");
		ui_nav_contact_2 = newImage("image/ui-nav-contact_2.gif");
		preloadFlag = true;
	}
}