function ActivateRichTextBox(owner, activate) {
    var ifrm = owner.document.getElementById('ifrmBody');
    if (ifrm != null) {
        if (activate) {
            if (ifrm.style.visibility == 'hidden') {
                ifrm.style.visibility = 'visible';
            }
        }
        else {
            if (ifrm.style.visibility == 'visible') {
                ifrm.style.visibility = 'hidden';

                setTimeout('ActivateRichTextBox(parent, true)', 200);
            }    
        }
    }
}

function getQuerystring(key, default_) {
    if (default_ == null) default_ = "";
    key = key.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regex = new RegExp("[\\?&]" + key + "=([^&#]*)");
    var qs = regex.exec(window.location.href);
    if (qs == null)
        return default_;
    else
        return qs[1];
}