// JScript File
function NavControl_OnMouseOver(oCaller)
{
    var img = oCaller.firstChild.firstChild;
    img.src = NavControl_GetImage(img.src, true);
}
function NavControl_OnMouseOut(oCaller)
{
    var img = oCaller.firstChild.firstChild;
    img.src = NavControl_GetImage(img.src, false);
}
function NavControl_GetImage(imgName, selected)
{
    var name = imgName;
    var index = name.lastIndexOf(".jpg");
    if (selected)
    {
        if (index >= 0)
            name = name.substring(0, index) + "On" + name.substring(index);
    }
    else
    {
        if (index >= 0)
            name = name.substring(0, index-2) + name.substring(index);
    }
    return name;
}