function AjaxFailed(xhr, status, error) {
    var message = "Ajax Failed: unknown reason";
    if (xhr.responseText != null || xhr.responseText != "") {
        message = xhr.responseText;
    }
    $.ajax({
        type: "POST",
        url: '<%= ResolveUrl("~/ClientErrorHandler.asmx/handle")%>',
        data: '{"errorOccurred": "true", "error":"' + mesage + '"}',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        error: function (xhr, status, error) {
            alert("Ajax Failed - error: " + xhr);
        }
    });
}