I have selector like this '.EnFormActive//#en_form_23 td' The html code is:

<div class="EnFormPassive">

<fieldset>

<fieldset>

<legend>legend</legend>

...

</fieldset>

<fieldset>

<legend>bbb</legend>

<div class="formLine"></div>

<table id="pusobnost_tab_en">

<thead>

<tr>

<th></th>

<th></th>

<th></th>

</tr>

</thead>

<tbody>

<tr id="en_form_23">

<td></td>

<td></td>

<td><a id="editFOALinkEn_23" href="#">xxx</a></td>

</tr>

</tbody>

</table>

</fieldset>

</div>

I use jQuery to swith main div class between EnFormPassive and EnFormActive. So I want to know how many td's are selected. When is passive and I use the selector abowe, IE tells me about error "getElementById is null or is not object". FireFox works fine and return 0;