Html:

  code is as follows:  


<Td align="center" valign="middle" >
<Img SRC="http://www.jb51.net//web/images/checkBox.png"/>
</td>

the align=" Center" As the horizontal center;
valign=" Middle" As the vertical center, this property is sometimes not good.
can also through the style Settings:

Html:

  code is as follows:  


<Td style="text - align: center;" >
<Img style="vertical - align: middle;" SRC="http://www.jb51.net//web/images/checkBox.png"/>
</td>


This concludes the body part