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) {
		menu_01_over = newImage("http://images.trucks.com/images/menu_01-over.gif");
		menu_02_over = newImage("http://images.trucks.com/images/menu_02-over.gif");
		menu_03_over = newImage("http://images.trucks.com/images/menu_03-over.gif");
		menu_04_over = newImage("http://images.trucks.com/images/menu_04-over.gif");
		menu_05_over = newImage("http://images.trucks.com/images/menu_05-over.gif");
		menu_06_over = newImage("http://images.trucks.com/images/menu_06-over.gif");
		menu_07_over = newImage("http://images.trucks.com/images/menu_07-over.gif");
		footer_03_over = newImage("http://images.trucks.com/images/footer_03-over.gif");
		footer_04_over = newImage("http://images.trucks.com/images/footer_04-over.gif");
		footer_05_over = newImage("http://images.trucks.com/images/footer_05-over.gif");
		footer_06_over = newImage("http://images.trucks.com/images/footer_06-over.gif");
		footer_07_over = newImage("http://images.trucks.com/images/footer_07-over.gif");
		footer_08_over = newImage("http://images.trucks.com/images/footer_08-over.gif");
		preloadFlag = true;
	}
}
function preloadImagesHTTPS() {
	if (document.images) {
		menu_01_over = newImage("https://www.trucks.com/images/menu_01-over.gif");
		menu_02_over = newImage("https://www.trucks.com/images/menu_02-over.gif");
		menu_03_over = newImage("https://www.trucks.com/images/menu_03-over.gif");
		menu_04_over = newImage("https://www.trucks.com/images/menu_04-over.gif");
		menu_05_over = newImage("https://www.trucks.com/images/menu_05-over.gif");
		menu_06_over = newImage("https://www.trucks.com/images/menu_06-over.gif");
		menu_07_over = newImage("https://www.trucks.com/images/menu_07-over.gif");
		footer_03_over = newImage("https://www.trucks.com/images/footer_03-over.gif");
		footer_04_over = newImage("https://www.trucks.com/images/footer_04-over.gif");
		footer_05_over = newImage("https://www.trucks.com/images/footer_05-over.gif");
		footer_06_over = newImage("https://www.trucks.com/images/footer_06-over.gif");
		footer_07_over = newImage("https://www.trucks.com/images/footer_07-over.gif");
		footer_08_over = newImage("https://www.trucks.com/images/footer_08-over.gif");
		preloadFlag = true;
	}
}

function formHandler(form){
	var URL = form.site.options[form.site.selectedIndex].value;
	window.location.href = URL;
}