function pusk() 
{ 
 host = 'http://scripts/birthday';  
 query = 'test=a';
 url = host + '/index.php';

 $.ajax({
  url: url,
  type: "POST",
  data: query,
  success: function(html){
   $("#ajax").html(html);
   
  }
 });
 
 $("#load").ajaxStart(function pusk(){
   $(this).show();
  });
  $("#load").ajaxStop(function pusk(){
   $(this).hide();
  });
}