if (document.images) {   

    // "On" images   
    img1on = new Image(  );
    img1on.src = "/__shared/templates/images/nav/home-down.gif"; 
	
	img2on = new Image(  );
    img2on.src = "/__shared/templates/images/nav/discover-down.gif";
	
	img3on = new Image(  );
    img3on.src = "/__shared/templates/images/nav/cityhall-down.gif";
	
	img4on = new Image(  );
    img4on.src = "/__shared/templates/images/nav/cityservice-down.gif";
	
	img5on = new Image(  );
    img5on.src = "/__shared/templates/images/nav/business-down.gif";
	
	img6on = new Image(  );
    img6on.src = "/__shared/templates/images/nav/parksandrec-down.gif";
	
	img7on = new Image(  );
    img7on.src = "/__shared/templates/images/nav/culture-down.gif";
	
	img8on = new Image(  );
    img8on.src = "/__shared/templates/images/nav/public-down.gif";
	 

    // "Off" images   
    img1off = new Image(  );
    img1off.src = "/__shared/templates/images/nav/home.gif"; 
	
	img2off = new Image(  );
    img2off.src = "/__shared/templates/images/nav/discover.gif";
	
	img3off = new Image(  );
    img3off.src = "/__shared/templates/images/nav/cityhall.gif";
	
	img4off = new Image(  );
    img4off.src = "/__shared/templates/images/nav/cityservice.gif";
	
	img5off = new Image(  );
    img5off.src = "/__shared/templates/images/nav/business.gif";
	
	img6off = new Image(  );
    img6off.src = "/__shared/templates/images/nav/parksandrec.gif";
	
	img7off = new Image(  );
    img7off.src = "/__shared/templates/images/nav/culture.gif";
	
	img8off = new Image(  );
    img8off.src = "/__shared/templates/images/nav/public.gif";

}

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

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