在div中闪烁图片

i have a div on a php page that automatically load a php page every 10 sec with this code :

       $(document).ready(function () {

     var auto_refresh = setInterval(function () {


         $.ajax({
             type: 'GET',
             url: 're.php',
             data: {
                 get_param: 'value'
             },
             success: function (data) {
                 var names = data
                 if (yn != 0) $('#content').html(data);
             }
         });


     }, 10000);


 });

My problem is that in the page loaded i have pictures .So every 10 seconds some of them are flashing (text is not flashing). Note that some pictures are changed in these 10 seconds . I have noticed that only these pictures are flashing when the div is updated ... what is wrong ?