[jQuery] slideToggle stops working after refreshing content with Ajax

[Sala]

I can't figure out what's wrong.

The slidetoggle works fine until I refresh the page using Ajax, even
though the same exact html is outputted by "mycontent.php"

<!--SLIDETOGGLE-->
<script type="text/javascript">
  jQuery(document).ready(function() {
  jQuery(".displayer").click(function()
  {
    jQuery(this).next(".hidlayer").slideToggle(100);
  });
});
</script>

<script type="text/javascript"><!--AJAX-->
function refreshcontent(){
 $.get("mycontent.php", function(data){
  $("#container").animate({ opacity: "hide" }, 200);
  $("#container").html(data);
  $("#container").animate({ opacity: "show" }, 200);
});
}
</script>
<!--JQUERY CODE END-->


<!--OUTPUT FROM MYCONTENT.PHP-->
     <div id="container">
                <div class="message_block">
                <div class="<?php echo $class; ?>"><?php echo $cando; ?></div>
                <div class="message_block_text">
                        <table class="displayer btn" border="0" width="645">
                                        <tr>
                                        <td width="30"><span class="icon"><img 
src="images/arrow.png"
alt="arrow" width="16" height="14" /></span></td>
                                                <td width="100"><div 
class="unha_sections aquen"><span
class="message_info_text">Usuario </span><span
class="unha_info_data"><?php echo $aquen; ?></span></div></td>
                                        <td width="300"><div><span 
class="unha_info_data"><?php
echo $mymessage; ?></span></div></td>
                                        <td width="66"><div 
class="unha_sections activated"><span
class="unha_info_text">Enviado: </span><span class="unha_info_data"><?
php echo $act; ?></span></div></td>
                                        <td width="34" 
style="text-align:right;"><img src="images/
envooo.png" width="34" height="23" alt="" /></td>
                                  </tr>
                                </table>
                <div class="hidlayer">
                                   <?php echo $message; ?>
                   <div class="options">Edit</div>
                </div>
                  </div>
                </div>
      </div>
<!--OUTPUT FROM MYCONTENT.PHP END-->