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_perennials_8 = newImage("image/ui-nav-perennials_8.gif");
		ui_nav_perennials_7 = newImage("image/ui-nav-perennials_7.gif");
		ui_nav_waterplants_10 = newImage("image/ui-nav-waterplants_10.gif");
		ui_nav_waterplants_9 = newImage("image/ui-nav-waterplants_9.gif");
		ui_nav_broker_12 = newImage("image/ui-nav-broker_12.gif");
		ui_nav_broker_11 = newImage("image/ui-nav-broker_11.gif");
		ui_nav_promotions_14 = newImage("image/ui-nav-promotions_14.gif");
		ui_nav_promotions_13 = newImage("image/ui-nav-promotions_13.gif");
		ui_nav_availability_16 = newImage("image/ui-nav-availability_16.gif");
		ui_nav_availability_15 = newImage("image/ui-nav-availability_15.gif");
		ui_nav_orderForms_17 = newImage("image/ui-nav-orderForms_17.gif");
		preloadFlag = true;
	}
}