// preload images:
if (document.images) {
    
    home = new Image(); home.src = "images/btn/btnHome.gif";
    homeON = new Image(); homeON.src = "images/btn/btnHomeON.gif";

    tools = new Image(); tools.src = "images/btn/btnTools.gif";
    toolsON = new Image(); toolsON.src = "images/btn/btnToolsON.gif";

    locate = new Image(); locate.src = "images/btn/btnLocate.gif";
    locateON = new Image(); locateON.src = "images/btn/btnLocateON.gif";

    testimonials = new Image(); testimonials.src = "images/btn/btnTestimonials.gif";
    testimonialsON = new Image(); testimonialsON.src = "images/btn/btnTestimonialsON.gif";

    contact = new Image(); contact.src = "images/btn/btnContact.gif";
    contactON = new Image(); contactON.src = "images/btn/btnContactON.gif";

}

function hiLite(imgName,imgObjName) {
if (document.images) {
  document.images[imgName].src = eval(imgObjName + ".src");
}}