if (document.images) 
	{
	img1 = new Image();
	img2 = new Image();
	img3 = new Image();
	img4 = new Image();
	img5 = new Image();
	img6 = new Image();
	img7 = new Image();
	img8 = new Image();
	img9 = new Image();
	img10 = new Image();
	img11 = new Image();
	img12 = new Image();
	img1.src = "img/navAvailableOff.gif";
	img2.src = "img/navAvailable.gif";
	img3.src = "img/navAboutOff.gif";
	img4.src = "img/navAbout.gif";
	img5.src = "img/navMaintenanceOff.gif";
	img6.src = "img/navMaintenance.gif";
	img7.src = "img/navRecentOff.gif";
	img8.src = "img/navRecent.gif";
	img9.src = "img/navLinksOff.gif";
	img10.src = "img/navLinks.gif";
	img11.src = "img/navContactOff.gif";
	img12.src = "img/navContact.gif";
	}