if (document.images) {
            img1on = new Image();  img1on.src = "assets/nav/home2.gif";
            img1off = new Image();  img1off.src = "assets/nav/home1.gif";
            img2on = new Image();  img2on.src = "assets/nav/about2.gif";
            img2off = new Image();  img2off.src = "assets/nav/about1.gif";
            img3on = new Image();  img3on.src = "assets/nav/mediation2.gif";
            img3off = new Image();  img3off.src = "assets/nav/mediation1.gif";
            img4on = new Image();  img4on.src = "assets/nav/links2.gif";
            img4off = new Image();  img4off.src = "assets/nav/links1.gif";
            img5on = new Image();  img5on.src = "assets/nav/contact2.gif";
            img5off = new Image();  img5off.src = "assets/nav/contact1.gif";

            img21on = new Image();  img21on.src = "assets/nav/approach2.gif";
            img21off = new Image();  img21off.src = "assets/nav/approach1.gif";
            img22on = new Image();  img22on.src = "assets/nav/cv2.gif";
            img22off = new Image();  img22off.src = "assets/nav/cv1.gif";
            img23on = new Image();  img23on.src = "assets/nav/testimonials2.gif";
            img23off = new Image();  img23off.src = "assets/nav/testimonials1.gif";

            img31on = new Image();  img31on.src = "assets/nav/benefits2.gif";
            img31off = new Image();  img31off.src = "assets/nav/benefits1.gif";
            }

// imgigation rollovers

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");}}