function flip(ID)
{
    var obj = document.getElementById(ID);
    if (!(obj))
        obj = document.getElementById("ctl00_" + ID);
    var suffix = "";
    if (obj.src.indexOf("_over") == -1)
       suffix = "_over"
    
    if (obj.src.indexOf("_on") == -1) {
        if (ID == "btnSubmit")
            obj.src = "graphics/design/btn_submit_video" + suffix + ".jpg";
        else if (ID == "btnVideos")
            obj.src = "graphics/design/btn_all_videos" + suffix + ".jpg";
        else if (ID == "btnStats")
            obj.src = "graphics/design/btn_stats" + suffix + ".jpg";
        else if (ID == "btnViewAll")
            obj.src = "graphics/design/btn_view_all" + suffix + ".png";
        else if (ID == "btnArrive")
            obj.src = "graphics/design/arrive_alive" + suffix + ".jpg";
    }
}

function closePopup()
{
    document.getElementById("popupShell").style.display = "none";
    document.getElementById("popupShadow").style.display = "none";
    return false;
}
function showPopup()
{
    document.getElementById("popupShell").style.display = "block";
    document.getElementById("popupShadow").style.display = "block";
    return false;
}