function showMap()
 {
        $.blockUI({ message: $('#map_output') }); 
        $.ajax({ url: 'http://www.openstreetmap.org/export/embed.html?bbox=30.19009,55.15783,30.22168,55.17092&layer=mapnik&marker=55.16391,30.20296', cache: false });
        $('.blockOverlay').attr('title','Click to unblock').click($.unblockUI);         
 }