td/tr只有开始标记符，没有结束标记符</td></tr>。你觉得能出来吗?

------解决方案--------------------
同意楼上的，你的html没有掌握好，
HTML code

 <div id="mainframe">
<table>
<tr>
<td class="label">Build: </td> 
<td id="buildInfoField" class="data"></td> 
<td id="newbuildButtonPane" class="buttons"></td> 
<input id="newbuildButton" type=button value="Add New Build">
<tr>
<td class="label">Platform: </td>  
<td id="platformField" class="data"></td> 
<tr>
<td class="label">Scan Status:  </td> 
<td id="statusField" class="data"></td> 
<td id="reportButtonsPane" class="buttons"></td> 
<input id="pdfButton" type=button value="PDF Report"><br>
<input id="xmlButton" type=button value="XML Report">
<tr>
<td class="label">Uploaded Files: http://www.jxy120.com</td> 
<td id="prescanField"></td> 
<input id="showFilesButton" type=button value="Show uploaded files">
<td id="ulButtonPane" class="buttons"></td> 
<input id="ulFilesButton" type=button value="Upload Files">
</table>
</div>