function runajax()
 {
  var wall_message = $("#wall_message").val();
  
  $.ajax({
    type: "POST",
	data: "wall_message=" + wall_message,
    url: "/ajax/wallmessage",
    dataType: "json",
    success: function(data)
    {
   if(!data.result)
   {
    $("#trueimg").css('display','inline');
    $("#falseimg").css('display','none');
    $("#loader").css('display','none');
	
	var text_delete = document.getElementById('email');
	text_delete.value = "";
   }
   else
   {
    $("#falseimg").css('display','inline');
    $("#trueimg").css('display','none');
    $("#loader").css('display','none');
   }
    }
  })
 }
 
 $(document).ready(function(){
  $("#btnsubmit").click(runajax);
 });

<?php foreach($wall as $message): ?>

<span style="font-family: tahoma; font-size:8pt"><?=$message['message'];?></span><br><br>

<?if(!$message['img'] == ""){?>
<a target="_blank" href="http://kohana/file/photo/<?=$message['img'];?>">
<img width="300px" id="btnsubmit" name="btnsubmit" src="/file/photo/<?=$message['img'];?>">
</a>
<?}?>