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) {
		home_bt_drugSearch_bt_over = newImage("images/home_bt-drugSearch_bt_over.jpg");
		home_bt_over = newImage("images/home_bt-over.jpg");
		drugSearch_bt_orderonline_bt_over = newImage("images/drugSearch_bt-orderonline_b.jpg");
		drugSearch_bt_over = newImage("images/drugSearch_bt-over.jpg");
		drugSearch_bt_home_bt_over = newImage("images/drugSearch_bt-home_bt_over.jpg");
		orderonline_bt_orderFax_bt_over = newImage("images/orderonline_bt-orderFax_bt_.jpg");
		orderonline_bt_over = newImage("images/orderonline_bt-over.jpg");
		orderonline_bt_drugSearch_bt_over = newImage("images/orderonline_bt-drugSearch_b.jpg");
		orderFax_bt_store_bt_over = newImage("images/orderFax_bt-store_bt_over.jpg");
		orderFax_bt_over = newImage("images/orderFax_bt-over.jpg");
		orderFax_bt_orderonline_bt_over = newImage("images/orderFax_bt-orderonline_bt_.jpg");
		store_bt_over = newImage("images/store_bt-over.jpg");
		store_bt_orderFax_bt_over = newImage("images/store_bt-orderFax_bt_over.jpg");
		preloadFlag = true;
	}
}