XPath Selector与FirefoxDriver一起正常工作，但不能与HtmlUnitDriver一起工作

Question

我在我的html页面中有下面的代码。

<tr id="HL1035569648A" bgcolor="#ffffff"> 

    <td rowspan="2" align="center" width="40"><input name="product_id" value="1035569648" onclick="syncSA(this,document.inquiry.toggleSA);hlChecked(this,document.inquiry.product_id,2,'#ffffff');" type="checkbox"></td> 


    <td rowspan="2" width="90"> <div id="ysop"><a href="http://www.globalsources.com/gsol/I/Induction-cooker/p/sm/1035569648.htm"><img class="imgborder" src="http://akamai.globalsources.com.edgesuite.net/f/593/3445/5d/pdt.static.globalsources.com/IMAGES/PDT/THUMB/648/T1035569648.jpg" alt="Induction Cooker Manufacturers" title="Induction Cooker Manufacturers" onmouseout="showPPOut();" onmouseover="showPPSummary(event,'1035569648',false,rollOvInqURL);" align="left" height="80" hspace="1" vspace="1" width="80"></a> </div></td> 

    <td><a href="http://www.globalsources.com/gsol/I/Induction-cooker/p/sm/1035569648.htm" name="1035569648">Induction <b>Cooker</b></a><br> 
Induction Cooker with 50/60Hz Rated Frequency, 90 to 230V AC Input Voltages and 7.2kW Maximum Power<br></td> 

    <td><a href="http://inductioncooktop.manufacturer.globalsources.com/si/6008838306671/Homepage.htm" title="TOPBAND Induction cookers Division">TOPBAND Induction cookers Division</a><br><a href="http://inductioncooktop.manufacturer.globalsources.com/si/6008838306671/Showroom/3000000149681/ALL.htm">47&nbsp;products</a></td> 


    <td rowspan="2">China (mainland)</td> 
    <td rowspan="2"> 
     <div class="space_filler"><a href="javascript:actionInqSingleInqPath('/gsol/GeneralManager?&amp;catalog_id=2000000003844&amp;design=clean&amp;language=en&amp;action=GetInquireNowBasket&amp;page=inquiry/InqForm&amp;template=RFI&amp;inqflow_path=NLI','InquireNow_KW',1035569648)"><img src="http://akamai.globalsources.com.edgesuite.net/f/593/3445/5d/static.globalsources.com/gsol/en/clean/images/ICON-INQUIRE.GIF" border="0" height="13" width="55"></a></div> 
     <div class="space_filler"><a href="javascript:void(0);" onclick="javascript:checkIM('/gsol/GeneralManager?&amp;catalog_id=2000000003844&amp;design=clean&amp;language=en&amp;page=im/IMSelection&amp;id=6008838306671&amp;IMSource=productsearch',340,455,'pop',null);"><img src="http://akamai.globalsources.com.edgesuite.net/f/593/3445/5d/static.globalsources.com/gsol/en/clean/images/ICON-CHAT.GIF" alt="Chat with this supplier (Login/Registration required)" title="Chat with this supplier (Login/Registration required)" border="0" height="13" width="55"></a></div> 
    </td> 
</tr>` 

我想要检索链接和描述

<td><a href="http://www.globalsources.com/gsol/I/Induction-cooker/p/sm/1035569648.htm" name="1035569648">Induction <b>Cooker</b></a><br> 
Induction Cooker with 50/60Hz Rated Frequency, 90 to 230V AC Input Voltages and 7.2kW Maximum Power<br></td>` 

我使用下面的XPath：

//Link: http://www.globalsources.com/gsol/I/Induction-cooker/p/sm/1035569648.htm 
driver.findElements(By.xpath("//tr[starts-with(@id, 'HL')]/td[3]/a"); 

//Summary: Induction Cooker with 50/60Hz Rated Frequency, 90 to 230V AC Input Voltages and 7.2kW Maximum Power 
driver.findElements(By.xpath("//tr[starts-with(@id, 'HL')]/td[3]"); 

注：我不能用HL1035569648A全id因为有很多表行有这个链接和所有的表行有不同的类名，但他们都以HL开头。

这正常工作与FirefoxDriver，但它不与HtmlUnitDriver工作。有人可以帮助我吗？我不理解这个问题。

谢谢！