var $jAlertDialog = $('<div></div>');

function jAlert(message, title)
{
    $jAlertDialog.html(message);
    $jAlertDialog.dialog({
        autoOpen: false,
        title: 'Chyba',
        buttons: { "Ok": function() { $(this).dialog("close"); } },
        resizable: false,
        show: 'fade',
        hide: 'fade',
        modal: true
    });
    $jAlertDialog.dialog('open');
}