Update multi 'id' using form_remote_tag

[eluser]Zulkhaery B[/eluser]
This is a basic question:

i'm using Ajax For CI library, like this:

Code:

<?=$this->ajax->form_remote_tag(array('url'=>'catalog/addtocart/'.$row->catalog_id, 'update'=>'cart'));?>
...
....
</form>

my div like this:

Code:

<div id="cart">
...
</div>

<div id="cart_2">
...
</div>

how to update cart_2 using form_remote_tag method ?

thanks again ;-)

[eluser]Zulkhaery B[/eluser]
any body can help me?