مشكلة فى وضع كود اخفاء واظهار الاقسام

<th nowrap="nowrap" width="150"><div style="width:150px;">{L_LASTPOST}</div></th>[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
    </tr>

     <th style="width: 200px;" nowrap="nowrap">{L_LASTPOST}</th>
<th width="150" nowrap="nowrap">
<divstyle="width:150px;">
<img src="http://i81.servimg.com/u/f81/18/37/56/87/i_tabs11.png"
onclick="i=0;e=this.parentNode.parentNode.parentNode.parentNode.childNodes;while(++i<e.length)if(e[i].tagName=='TR')e[i].style.display=(e[i].style.display=='none')?'':'none';this.src=(this.src=='http://i48.servimg.com/u/f48/12/78/95/70/hima113.gif')?'http://i45.tinypic.com/2z9dxyt.gif':'http://i81.servimg.com/u/f81/18/37/56/87/i_tabs10.png';">
</divstyle="width:150px;">
</th>
</tr>

<td class="row3 over" align="center" valign="middle" height="50">[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
            <span class="gensmall">{catrow.forumrow.LAST_POST}</span>[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
        </td>

        <td class="row3" valign="middle" height="50" align="center" colspan="3">[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
            <span class="gensmall">{catrow.forumrow.LAST_POST}</span>[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
        </td>

     <th style="width: 200px;" nowrap="nowrap">{L_LASTPOST}</th>[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
<th width="150" nowrap="nowrap">[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
<divstyle="width:150px;">[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
<img src="http://i81.servimg.com/u/f81/18/37/56/87/i_tabs11.png"[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
onclick="i=0;e=this.parentNode.parentNode.parentNode.parentNode.childNodes;while(++i<e.length)if(e[i].tagName=='TR')e[i].style.display=(e[i].style.display=='none')?'':'none';this.src=(this.src=='http://i48.servimg.com/u/f48/12/78/95/70/hima113.gif')?'http://i45.tinypic.com/2z9dxyt.gif':'http://i81.servimg.com/u/f81/18/37/56/87/i_tabs10.png';">[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
</divstyle="width:150px;">[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
</th>[color=#000000][font=Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace][/font][/color]
</tr>