Sortable list problem

[eluser]Unknown[/eluser]
Ok, I've got it.

Code:

<tr id="item1"><td>item1</td></tr>
<tr id="item1"><td>item2</td></tr>

has to be:

Code:

<tr id="item_1"><td>item1</td></tr>
<tr id="item_2"><td>item2</td></tr>

(the number have to correspond with the id of the row)