if (document.images){ 
	img1on = new Image();
	img1on.src = "/img/sites/30/tabs_acuvue-on.gif";
	img1off = new Image();
	img1off.src = "/img/sites/30/tabs_acuvue-off.gif";

	img2on = new Image();
	img2on.src = "/img/sites/30/tabs_freshlook-on.gif";
	img2off = new Image();
	img2off.src = "/img/sites/30/tabs_freshlook-off.gif";

	img3on = new Image();
	img3on.src = "/img/sites/30/tabs_focus-on.gif";
	img3off = new Image();
	img3off.src = "/img/sites/30/tabs_focus-off.gif";

	img4on = new Image(); 
	img4on.src = "/img/sites/30/tabs_dailies-on.gif";
	img4off = new Image(); 
	img4off.src = "/img/sites/30/tabs_dailies-off.gif";

	img5on = new Image(); 
	img5on.src = "/img/sites/30/tabs_soflens-on.gif";
	img5off = new Image();
	img5off.src = "/img/sites/30/tabs_soflens-off.gif";

	img6on = new Image();
	img6on.src = "/img/sites/30/tabs_eye_accessories-on.gif";
	img6off = new Image();
	img6off.src = "/img/sites/30/tabs_eye_accessories-off.gif";
}