function checkStatus(){ 
        jQuery.get('/server-url?chat_id=32&status', function(data){ 
             if (data.status == 'typing') 
                 $('#yaziyor').html('The agent is typing a message..'); 
             else 
                 $('#yaziyor').html(''); 
             checkStatus(); 
        }); 
  } 
   
   
  setTimeout(checkStatus, 300); 
  var client_timer; 
  $('#chatMessage').keyup(function(){  
     if (client_timer) clearTimeout(client_timer); 
     if ($("#chatMessage").val() == ''){ 
        status = 'empty';  
     } else {  
        status = 'Yazıyor...'; 
     } 
     client_timer = setTimeout(function(){ 
         $.post('/server-url?chat_id=23', {status: status}, function(data){ 
         }); 
     }, 400); 
  });