如何写这个xpath表达式？

下面有个table,
<table>
<tr bgcolor="F3F3F3">
<td align="right" width="240" class="tickerSm">reportdate</td>
<td align="right" width="65" class="tickerSm">10/31/09</td>
<td align="right" width="65" class="tickerSm">10/31/08</td>
<td align="right" width="65" class="tickerSm">10/31/07</td>
<td align="right" width="65" class="tickerSm">10/31/06</td>
<td align="right" width="65" class="tickerSm">10/31/05</td>
</tr>
<tr bgcolor="ffffff">
<td class="tickerSm">Cash & Equivalents</td>
<td align="right" class="ticker">2,493</td>
<td align="right" class="ticker">1,429</td>
<td align="right" class="ticker">1,826</td>
<td align="right" class="ticker">2,262</td>
<td align="right" class="ticker">2,251</td>
</tr>
<tr bgcolor="ffffff">
<td class="ticker">Receivables</td>
<td align="right" class="ticker">595</td>
<td align="right" class="ticker">770</td>
<td align="right" class="ticker">735</td>
<td align="right" class="ticker">692</td>
<td align="right" class="ticker">753</td>
</tr>
</table>xpath('//table/tr[td[@class="tickerSm"]') 得到 :<tr bgcolor="F3F3F3">
<td align="right" width="240" class="tickerSm">reportdate</td>
<td align="right" width="65" class="tickerSm">10/31/09</td>
<td align="right" width="65" class="tickerSm">10/31/08</td>
<td align="right" width="65" class="tickerSm">10/31/07</td>
<td align="right" width="65" class="tickerSm">10/31/06</td>
<td align="right" width="65" class="tickerSm">10/31/05</td>
</tr>
<tr bgcolor="ffffff">
xpath('//table/tr[td[@class="ticker"]') 得到 :<tr bgcolor="ffffff">
<td class="ticker">Receivables</td>
<td align="right" class="ticker">595</td>
<td align="right" class="ticker">770</td>
<td align="right" class="ticker">735</td>
<td align="right" class="ticker">692</td>
<td align="right" class="ticker">753</td>
</tr>如何用xpath得到下面呢？
<tr bgcolor="ffffff">
<td class="tickerSm">Cash & Equivalents</td>
<td align="right" class="ticker">2,493</td>
<td align="right" class="ticker">1,429</td>
<td align="right" class="ticker">1,826</td>
<td align="right" class="ticker">2,262</td>
<td align="right" class="ticker">2,251</td>
</tr>