<?php
    include 'size.php';     

    ?>
 
   
</body>

<script>
    $(document).ready(function(){
   
        $.ajax({
            url: "size.php",
            dataType: 'html',
            success: function() {                
            }
        });
  
    });
</script>

....
....

 if (time() - $stat_info['mtime'] < $period) {
       
                $result = '<tr><td>' . date("d-m H:i", $stat_info[9]) . '</td><td>' . $folder . DIRECTORY_SEPARATOR . $file . '</td></tr>';
                if (isset($result)) {
                    echo "<script>atas();</script>";
                }
                    
                
            }
function atas(){
    
    alert('atas');
   
}
</script>