function isFlashPlugin()
{
    var isFlashPlugin = navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] &&
    navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin;

    return isFlashPlugin;
}

function detectFlash(flash)
{
    if (!flash)
    {
        actif = window.setInterval("displayImgCalendar()",100);
    }
}

function displayImgCalendar()
{
    var flashCalendar   = EL('flashCalendar');
    var imgCalendar     = EL('imgCalendar');

    if (flashCalendar != null && imgCalendar != null)
    {
        flashCalendar.style.display = "none";
        imgCalendar.style.display = "block";
    }

    window.clearInterval(actif);
}