var preloadFlag = false;


function preloadImages(root) {
	if (document.images) {

		left_nav_main_over = newImage(root+"images/navigation/left_nav_main_over.gif");
		left_nav_about_over = newImage(root+"images/navigation/left_nav_about_over.gif");
		left_nav_home_over = newImage(root+"images/navigation/left_nav_home_over.gif");
		left_nav_auto_over = newImage(root+"images/navigation/left_nav_auto_over.gif");
		left_nav_commercial_over = newImage(root+"images/navigation/left_nav_commercial_over.gif");
		left_nav_find_us_over = newImage(root+"images/navigation/left_nav_find_us_over.gif");
		left_nav_contact_us_over = newImage(root+"images/navigation/left_nav_contact_us_over.gif");
		left_nav_resources_over = newImage(root+"images/navigation/left_nav_resources_over.gif");
		
		preloadFlag = true;
	}
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages(image, source) {
	if (document.images && (preloadFlag == true)) {
		document.images[image].src=source;
		
	}
}