comment system jQuery/ajax php mysql -


im working on comment system don't know how fix bug.. when write text area , press submit, nothing happens. link file correctly! when dont enter textarea, shows given error.

here comment.php file

<script type="text/javascript">     function toggle_comment(id) {        var e = document.getelementbyid(id);        if(e.style.display == 'block')           e.style.display = 'none';        else           e.style.display = 'block';     }      $(function() {  $(".submit").click(function() {      var comment = $("#comment").val();     var datastring = 'comment=' + comment;      if(comment=='')      {     alert('please give valide details');      }     else     {     $("#flash").show();     $("#flash").fadein(400).html('<img src="ajax-loader.gif" align="absmiddle">&nbsp;<span class="loading">loading comment...</span>'); $.ajax({         type: "post",   url: "index.php?s=comment",    data: datastring,   cache: false,   success: function(html){    $("#flash").hide();    }  }); } return false;     });    }); </script>   <a class="sitelinksblue" onclick="toggle_comment('commentfield');" style="font-family: verdana, geneva, sans-serif;font-size:12px;font-weight:bolder;">+ kommentar abgeben für englisch für anfänger</a> <?php if($_post) { $sqlcmd = "insert topmovies.comments          (username,comment,date)          values          ('".mysql_real_escape_string($_session['user_username'])."','".mysql_real_escape_string($_post["comment"])."','".$sqlzeit."')"; $sqlqry = mysql_query($sqlcmd,$sqlhp); if (!$sqlqry) {     die('invalid query: ' . mysql_error()); }else { echo'comment added!';} } ?>  <div id="commentfield" style="display:none">     <form method="post" action="#">         <p>dein name: <?php echo $_session['user_username']; ?></p>         <textarea class="interfaceforms" name="comment" id="comment" rows="5" cols="20" maxlength="1555" value=""></textarea><br />         <input type="submit" class="submit" value="submit" />     </form> </div> <?php $sql=mysql_query("select * topmovies.comments order date desc"); while($row=mysql_fetch_array($sql)) { $username=$row['username']; $comment=$row['comment']; $date=$row['date']; $name=$row['name']; ?>  <div id="comments" name="comments"> <div class="comments" style="padding-top:5px;">         <br>     <table width="746px" style="display:inline;" border="0" cellspacing="0" cellpadding="0">         <tr>         <td rowspan="4" valign="top" width="154px" style="padding-right:19px;"><img style="display: block; padding-top:10px;" src="http://img.movie4k.to/img/user_top.gif" height="8px"/>         <span class="test"><?php echo $username; ?><br />         <br />         <font size=1><?php echo date("d-m-y", strtotime($date))?></br>         <?php echo date("h:i", strtotime($date))?></font></span>         <img style="display: block; background-color: #afafaf; padding-left:10px; padding-right:10px;" src="http://img.movie4k.to/userpics/476090.gif" width=40 height=50/>         <img style="display: block;" src="http://img.movie4k.to/img/user_bottom.gif" height="8px"/></td>         <td colspan="2" valign="bottom" height="8px"><img style="display: block; padding-top:10px;" src="http://img.movie4k.to/img/comment_top2.gif" height="8px"/></td>         </tr>         <tr>         <td rowspan="2" width="522px" class="comment" valign="top" bgcolor="#e3e3e3" style="padding-left:10px; padding-right:17px;">         <?php echo $comment; ?>         </td>         <td width="85px" valign="top" bgcolor="#e3e3e3" style="font-size:19px;">         </td>         </tr>         <tr>         <td bgcolor="#e3e3e3" valign="bottom"></td>         </tr>         <tr>         <td colspan="2" valign="top" height="8px"><img style="display: block;" src="http://img.movie4k.to/img/comment_bottom2.gif" height="8px"/></td>         </tr>     </table> </div> </div> <br /> <?php } ?>

hope knows whats wrong! , maybe can give me tipps security/better performance etc.

your error can generated various causes, @ least code supposed have div id named flash .

 <div id='flash'>...</div>`

there aren't such div on html parts.


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