var nW,nH,oH,oW;

function setPic(picid,iWideLarge,iHighLarge,src)
{
    d=document.getElementById(picid);
    d.src = src;
    d.style.width = iWideLarge;
    d.style.height = iHighLarge;

}
function refreshPic()
{
    d=document.getElementById("demopic");
    d.src = d.src;
}



function newImage(arg) {
    if (document.images) {
        rslt = new Image();
        rslt.src = arg;
        return rslt;
    }
}

function changeImages() {
    if (document.images && (preloadFlag == true)) {
        for (var i=0; i<changeImages.arguments.length; i+=2) {
            document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
        }
    }
}

var preloadFlag = false;

function preloadImages() {
    if (document.images) {
        geo_mainNav_company_over = newImage("images/geo_mainNav_company-over.gif");
        geo_mainNav_services_over = newImage("images/geo_mainNav_services-over.gif");
        geo_mainNav_support_over = newImage("images/geo_mainNav_support-over.gif");
        geo_mainNav_contacts_over = newImage("images/geo_mainNav_contacts-over.gif");
        geo_mainNav_mygeo_over = newImage("images/geo_mainNav_mygeo-over.gif");
        geo_companyNav_aboutUs_over = newImage("images/geo_companyNav_aboutUs-over.gif");
        geo_companyNav_news_over = newImage("images/geo_companyNav_news-over.gif");
        geoMax_quickLink_tech_over = newImage("images/geoMax_quickLink_tech-over.gif");
        geoMax_quickLink_myG_over = newImage("images/geoMax_quickLink_myG-over.gif");
        geoMax_quickLink_offer_over = newImage("images/geoMax_quickLink_offer-over.gif");

        preloadFlag = true;
    }
}

<!-- Navigation script - used to show/hide submenus at the appropriate time -->
<!-- call this function with no id to hide all menus -->
<!-- call this function with the id of a sub menu and it will show that menu and hide the others -->
function show(id) {
    var d = document.getElementById(id);
    for (var i = 1; i<=10; i++) {
        if (document.getElementById('subMenu'+i)) {
            document.getElementById('subMenu'+i).style.display='none';
        }
        if (document.getElementById('level3Menu'+i)) {
            document.getElementById('level3Menu'+i).style.display='none';
        }
    }
    if (d) {
        d.style.display='block';
    }
}

function show(id1, id2) {
    var d1 = document.getElementById(id1);
    var d2 = document.getElementById(id2);
    for (var i = 1; i<=10; i++) {
        if (document.getElementById('subMenu'+i)) {
            document.getElementById('subMenu'+i).style.display='none';
        }
        if (document.getElementById('level3Menu'+i)) {
            document.getElementById('level3Menu'+i).style.display='none';
        }
    }
    if (d1) {
        d1.style.display='block';
    }
    if (d2) {
        d2.style.display='block';
    }
}

<!--Navigation script used to highlight the currently displayed page-->
function select(id){
    var link= document.getElementById(id);

    if(link) {

        link.className='selected';
    }
}