如何使鼠标经过就更换一个td里面的背景图片？

Question

<td onmouseover="this.background ='<这里写上你要更改的图片的url>'"></td>

Answer 1

<TR>
<TD id=aa onmouseover="this.background='1.jpg'" onmouseout="this.background=''" >0000asfsdfsdfadfasdf000000000</TD>
<TD>dddddddddddddd</TD>
</TR>

Answer 2

try<table>
  <tr>
   <td width=300 height=100 
onmouseover="this.style.backgroundImage='url(http://msdn.microsoft.com/library/shared/toolbar/graphics/banners/MSDN_banner.gif)';" 
onmouseout="this.style.backgroundImage='url(http://www.csdn.net/images/csdn.gif)';" 
style="background-image:url(http://www.csdn.net/images/csdn.gif);">
<a href="http://www.csdn.net">CSDN</a></td>
 </tr>
</table>