if (document.images) {
            image1on = new Image();
            image1on.src = "images/front/aboutm.gif";
            image2on = new Image();
            image2on.src = "images/front/packagesm.gif";
            image3on = new Image();
            image3on.src = "images/front/locationm.gif";
            image4on = new Image();
            image4on.src = "images/front/contactm.gif";
            image5on = new Image();
            image5on.src = "images/front/linksm.gif";
  
            image1off = new Image(); 
            image1off.src = "images/front/about.gif"; 
            image2off = new Image(); 
            image2off.src = "images/front/packages.gif";
            image3off = new Image();
            image3off.src = "images/front/location.gif";
            image4off = new Image(); 
            image4off.src = "images/front/contact.gif"; 
            image5off = new Image(); 
            image5off.src = "images/front/links.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");
}
}