IE 8 ajax sync problem

IE 8 ajax sync problem

Hi all,

i used a plugin that http://code.google.com/p/jquery-loadmask/ and i used ,

....click(function() {




     var aa =  $(this);
      aa.mask("loading");
     $.ajax({
        url: url,
        async:false,
        dataType: 'json',
        success: function(resp){
            if(resp) { aa.unmask(); }
      }
      });
}

like this.. it works FF and others but i cant see loading in ie.When i wanted to find problem, i deleted "async" so it would be true and then i can see ie.But, my ajax must be async.. how can i fix it ?

Plugin isnt matter, i try some append,html etc. there was a problem with async.

Thanks,
Best Regards,
Serhat DURUM