function preloadImages()
	{
		image1 = new Image();
		image1.src = "/_images/login_on_small.gif";
		image2 = new Image();
		image2.src = "/_images/send_on.gif";
		image3 = new Image();
		image3.src = "/_images/next_on.gif";
		image4 = new Image();
		image4.src = "/_images/prev_on.gif";
	}