if(document.images) {
        img1on = new Image();                     //create image objects for 
        img1on.src = "http://www.writersua.com/images/nav_home_on.gif";   //mouseover 
        img2on = new Image();                                                           
        img2on.src = "http://www.writersua.com/images/nav_sitemap_on.gif";
        img3on = new Image();
        img3on.src = "http://www.writersua.com/images/nav_forum_on.gif";
        img4on = new Image();
        img4on.src = "http://www.writersua.com/images/nav_join_on.gif";
        img5on = new Image();
        img5on.src = "http://www.writersua.com/images/nav_resource_on.gif";
        img6on = new Image();
        img6on.src = "http://www.writersua.com/images/nav_first_on.jpg";
        img7on = new Image();
        img7on.src = "http://www.writersua.com/images/nav_contact_on.jpg";
        img8on = new Image();
        img8on.src = "http://www.writersua.com/images/nav_rss_on.gif";
    
        img1off = new Image();                     //create image objects for
        img1off.src = "http://www.writersua.com/images/nav_home_off.gif";   //mouseout
        img2off = new Image();                                   
        img2off.src = "http://www.writersua.com/images/nav_sitemap_off.gif";
        img3off = new Image();
        img3off.src = "http://www.writersua.com/images/nav_forum_off.gif";
        img4off = new Image();
        img4off.src = "http://www.writersua.com/images/nav_join_off.gif";
        img5off = new Image();
        img5off.src = "http://www.writersua.com/images/nav_resource_off.gif";
        img6off = new Image();
        img6off.src = "http://www.writersua.com/images/nav_first_off.jpg";
        img7off = new Image();
        img7off.src = "http://www.writersua.com/images/nav_contact_off.jpg";
        img8off = new Image();
        img8off.src = "http://www.writersua.com/images/nav_rss_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");
        }
}