img1on = new Image();
	img1on.src = "images/nav_about2.gif";
	img1off = new Image();
	img1off.src = "images/nav_about.gif";

	img2on = new Image();
	img2on.src = "images/nav_services2.gif";
	img2off = new Image();
	img2off.src = "images/nav_services.gif";

	img3on = new Image();
	img3on.src = "images/nav_specialities2.gif";
	img3off = new Image();
	img3off.src = "images/nav_specialities.gif";

	img4on = new Image();
	img4on.src = "images/nav_testimonials2.gif";
	img4off = new Image();
	img4off.src = "images/nav_testimonials.gif";

	img5on = new Image();
	img5on.src = "images/nav_contact2.gif";
	img5off = new Image();
	img5off.src = "images/nav_contact.gif";


function imgAct (imgName) {
   document[imgName].src = eval(imgName + "on.src");
}

function imgInact(imgName) {
   document[imgName].src = eval(imgName + "off.src");
}