// make sure we don't get a .js error becuse the browser doesnt support the image objects
if (document.images)
{
    preload_image_object = new Image();
      
    // set image url
    image_url = new Array();

    image_url[0] = "../Images/common/buttons/Header/btnAboutUs.gif";
    image_url[1] = "../Images/common/buttons/Header/btnAboutUsSel.gif";
    image_url[2] = "../Images/common/buttons/Header/btnContactManager.gif";
    image_url[3] = "../Images/common/buttons/Header/btnContactManagerSel.gif";
    image_url[4] = "../Images/common/buttons/Header/btnContactUs.gif";
    image_url[5] = "../Images/common/buttons/Header/btnContactUsSel.gif";
    image_url[6] = "../Images/common/buttons/Header/btnDataQuality.gif";
    image_url[7] = "../Images/common/buttons/Header/btnDataQualitySel.gif";
    image_url[8] = "../Images/common/buttons/Header/btnGenieLounge.gif";
    image_url[9] = "../Images/common/buttons/Header/btnGenieLoungeSel.gif";
    image_url[10] = "../Images/common/buttons/Header/btnHome.gif";
    image_url[11] = "../Images/common/buttons/Header/btnHomeSel.gif";
    image_url[12] = "../Images/common/buttons/Header/btnMyAccount.gif";
    image_url[13] = "../Images/common/buttons/Header/btnMyAccountSel.gif";
    image_url[14] = "../Images/common/buttons/Header/btnSignIn.gif";
    image_url[15] = "../Images/common/buttons/Header/btnSignInSel.gif";
    image_url[16] = "../Images/common/buttons/Header/btnSignOut.gif";
    image_url[17] = "../Images/common/buttons/Header/btnSignOutSel.gif";
    
    var i = 0;
     
//    for(i=0; i<=17; i++) 
//      preload_image_object.src = image_url[i];
}

function lightup(imgCtl, arrPos)
{
    if (document.images)
    {
        //imgOn=eval(imgName + "Sel.src");
        //document[imgName].src= imgOn;
        imgCtl.src = image_url[arrPos];
    }
}

function lightuplink(lnkCtl, arrPos) {
    if (document.images) {
        //imgOn=eval(imgName + "Sel.src");
        //document[imgName].src= imgOn;
        lnkCtl.childNodes[0].src = image_url[arrPos];
    }
}

function turnoff(imgCtl, arrPos)
{
    if (document.images)
    {
        //imgOff=eval(imgName + ".src");
        //document[imgName].src= imgOff;
        imgCtl.src = image_url[arrPos];
    }
}

function turnofflink(lnkCtl, arrPos) {
    if (document.images) {
        //imgOff=eval(imgName + ".src");
        //document[imgName].src= imgOff;
        lnkCtl.childNodes[0].src = image_url[arrPos];
    }
}

function switchImage(currentImg, newImgID)
{
    var newImg = document.getElementById(newImgID);
    if(newImg)
    {
        currentImg.src = newImg.src;
    }
}