// <!--
if (document.images) {            
            img1on = new Image();   img1on.src = "/images/nav/about-on.gif"; 
            img2on = new Image();   img2on.src = "/images/nav/issues-on.gif";
            img3on = new Image();   img3on.src = "/images/nav/news-on.gif";
            img4on = new Image();   img4on.src = "/images/nav/seminars-on.gif";
			img5on = new Image();   img5on.src = "/images/nav/links-on.gif";
			img6on = new Image();   img6on.src = "/images/nav/search-on.gif";
			img7on = new Image();   img7on.src = "/images/nav/home-on.gif";



            img1off = new Image();  img1off.src = "/images/nav/about-off.gif"; 
            img2off = new Image();  img2off.src = "/images/nav/issues-off.gif";
            img3off = new Image();  img3off.src = "/images/nav/news-off.gif";
            img4off = new Image();  img4off.src = "/images/nav/seminars-off.gif";
			img5off = new Image();  img5off.src = "/images/nav/links-off.gif";
			img6off = new Image();  img6off.src = "/images/nav/search-off.gif";
			img7off = new Image();  img7off.src = "/images/nav/home-off.gif";

   
        }

   function imgOn(imgName) {

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

}

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