[jQuery] :contains selector question

[jQuery] :contains selector question

Hey guys,
Wanted to make sure I am getting the correct returned elements.
Assume I have a table like:
        <table cellpadding="3" cellspacing="0" border="1" width="100%">
            <tbody>
                <tr>
                    <td>Cell 1</td>
                    <td>Cell 2</td>
                    <td>Cell 3</td>
                    <td>Cell 4</td>
                    <td></td>
                    <td>Cell 6</td>
                </tr>
            </tbody>
        </table>
And then I run a piece a code like:
$(":contains('Cell')").css("background", "#ff0");
In my mind, I should only be getting back the TDs with "Cell" in it, but this is not the case.  the TABLE, TBODY, TR and TD are all getting a background collor of FF0.
Am I correct in what I think I should be getting back?
Thanks.<br clear="all">
--
Benjamin Sterling
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