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) {
		nav_whoweare_over = newImage("image/nav-whoweare-over.gif");
		nav_ourgreenhouses_over = newImage("image/nav-ourgreenhouses-over.gif");
		nav_ourlab_over = newImage("image/nav-ourlab-over.gif");
		nav_betterorchids_over = newImage("image/nav-betterorchids-over.gif");
		nav_ourdifference_over = newImage("image/nav-ourdifference-over.gif");
		nav_login_over = newImage("image/nav-login-over.gif");
		nav_register_over = newImage("image/nav-register-over.gif");
		nav_home_over = newImage("image/nav-home-over.gif");
			nav_ourorchids_over = newImage("image/nav-ourorchids-over.gif");
		nav_howtocare_over = newImage("image/nav-howtocare-over.gif");
		nav_gardencenter_over = newImage("image/nav-gardencenter-over.gif");
		nav_home2_over = newImage("image/nav-home2-over.gif");
		home_orchidenthusiasts_over = newImage("image/home-orchidenthusiasts-over.jpg");
		home_wholesalelogin_over = newImage("image/home-wholesalelogin-over.jpg");
		preloadFlag = true;
	}
}