[jQuery] Changing the ID of a cloned table row

[rivkadr]

Am getting bloody from beating my head against the wall. I just want
to be able to change the id of a table row that is cloned and appended
to a table. This shouldn't be so hard, no?

Here's what I've tried:

function addTableRow(table)
{
        var clonedRow = jQuery(table + " tr:last").clone().attr({ id:
'13' }) ;
        jQuery(table).append(clonedRow);
    return true;
}

OR

function addTableRow(table)
{
        var clonedRow = jQuery(table + " tr:last").clone();
        jQuery(clonedRow).attr("id", "13");  //yes, I want the id to be 13
        jQuery(table).append(clonedRow);
    return true;
}

Neither of the above works. Anyone got any help they can give me,
please?