function contact()
{
   var name = "contact";
   var at = "&#064";
   var dom = "sosinvention";
   var ext = "com";
   document.location = 'mailto:' + name + at + dom + '.' + ext;
}

browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
        if (browserName == "Netscape" && browserVer >= 3) version = "n3";
        else if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version = "n3";
        else version = "n2";      
        if (version == "n3")         {
        nav01on = new Image(37, 67);
        nav01on.src = "images/btn_home_on.jpg";
        nav02on = new Image(37, 104);
        nav02on.src = "images/btn_passport_on.jpg";
        nav03on = new Image(37, 82);
        nav03on.src = "images/btn_business_on.jpg";
        nav04on = new Image(37, 62);
        nav04on.src = "images/btn_faq_on.jpg";
        nav05on = new Image(37, 70);
        nav05on.src = "images/btn_watch_on.jpg";
        nav06on = new Image(37, 79);
        nav06on.src = "images/btn_contact_on.jpg";
        nav07on = new Image(37, 97);
        nav07on.src = "images/btn_documents_on.jpg";
        nav08on = new Image(17, 26);
        nav08on.src = "images/btn_fr_on.gif";
        nav09on = new Image(17, 26);
        nav09on.src = "images/btn_en_on.gif";
        nav10on = new Image(17, 26);
        nav10on.src = "images/btn_es_on.gif";
        nav01off = new Image(37, 67);
        nav01off.src = "images/btn_home_off.jpg";
        nav02off = new Image(37, 104);
        nav02off.src = "images/btn_passport_off.jpg";
        nav03off = new Image(37, 82);
        nav03off.src = "images/btn_business_off.jpg";
        nav04off = new Image(37, 62);
        nav04off.src = "images/btn_faq_off.jpg";
        nav05off = new Image(37, 70);
        nav05off.src = "images/btn_watch_off.jpg";
        nav06off = new Image(37, 79);
        nav06off.src = "images/btn_contact_off.jpg";
        nav07off = new Image(37, 97);
        nav07off.src = "images/btn_documents_off.jpg";
        nav08off = new Image(17, 26);
        nav08off.src = "images/btn_fr_off.gif";
        nav09off = new Image(17, 26);
        nav09off.src = "images/btn_en_on.gif";
        nav10off = new Image(17, 26);
        nav10off.src = "images/btn_es_off.gif";
        }
function img_act(imgName) {
        if (version == "n3") {
        imgOn = eval(imgName + "on.src");
        document [imgName].src = imgOn;
        }
}
function img_inact(imgName) {
        if (version == "n3") {
        imgOff = eval(imgName + "off.src");
        document [imgName].src = imgOff;
        }
}