将onclick事件放到图片上
<TD style="cursor:hand;" >
<img src="./image/aa.gif" border=0 align=absmiddle onclick="javascript:location.href='aa.html';"> click
</TD>
<TD style="cursor:hand;" >
<img src="./image/aa.gif" border=0 align=absmiddle onclick="javascript:location.href='aa.html';"> click
</TD>
<TD style="cursor:hand;" onclick="window.open('2.htm');" >
<img src="./image/aa.gif" border=0 align=absmiddle> click
</TD>