function showDialog(Url) {
    var Url = Url;

    $("#dialog").dialog({
        bgiframe: true,
        resizable: false,
        height: 140,
        modal: true,
        overlay: {
            backgroundColor: '#000',
            opacity: 0.5
        },
        buttons: {
            'WEITER ZUM DOWNLOAD': function() {
                $(this).dialog('close');
                $(this).dialog('destroy');
                window.location.href = Url;
            },
            'SCHLIESSEN': function() {
                $(this).dialog('close');
                $(this).dialog('destroy');
                $(this).destroy();
            }
        }
    });
}