if (document.images) {            // Active Images            img1on = new Image();             img1on.src = "images/about_ovr.gif";             img2on = new Image();            img2on.src = "images/adviceline_ovr.gif";             img3on = new Image();            img3on.src = "images/training_ovr.gif";            img4on = new Image();            img4on.src = "images/resources_ovr.gif";            img5on = new Image();            img5on.src = "images/join_ovr.gif";            img6on = new Image();            img6on.src = "images/feedback_ovr.gif";            img7on = new Image();            img7on.src = "images/faqs_ovr.gif";            img8on = new Image();            img8on.src = "images/map_ovr.gif";            img1off = new Image();             img1off.src = "images/about_off.gif";             img2off = new Image();            img2off.src = "images/adviceline_off.gif";             img3off = new Image();            img3off.src = "images/training_off.gif";            img4off = new Image();            img4off.src = "images/resources_off.gif";            img5off = new Image();            img5off.src = "images/join_off.gif";            img6off = new Image();            img6off.src = "images/feedback_off.gif";            img7off = new Image();            img7off.src = "images/faqs_off.gif";            img8off = new Image();            img8off.src = "images/map_off.gif";        }// Function to 'activate' images.function imgOn(imgName) {        if (document.images) {            document[imgName].src = eval(imgName + "on.src");        }}// Function to 'deactivate' images.function imgOff(imgName) {        if (document.images) {            document[imgName].src = eval(imgName + "off.src");        }}