you don't have a border, how can you see color changing? try<TABLE border=1 cellspacing=0 cellpadding=0>
<TR><TD ID="a1">xxxxxxxxxxxxx</TD></TR>
</TABLE><A Href="adfasd" 
onMouseOver="document.all.a1.style.borderColor='#FF0000'" 
onMouseOut="document.all.a1.style.borderColor='#0000FF'">啊啊啊</A>

解决方案 »

  1.   

    试一试我这个:
    <style>
    .blue{border-bottom:1pt solid blue;border-top:1pt solid blue;border-left:1pt solid blue;border-right:1pt solid blue}
    .red{border-bottom:1pt solid red;border-top:1pt solid red;border-left:1pt solid red;border-right:1pt solid red}
    </style>
    <TABLE>
    <TR><TD ID="a1" onmouseover="this.className='blue'" onmouseout="this.className='red'" class="red">asfasdfafaf</TD></TR>
    </TABLE>
      

  2.   

    <TABLE>
    <TR><TD ID="a1">hhh</TD></TR>
    </TABLE>
    <A Href="adfasd" 
    onMouseOver="document.all.a1.style.border='1px solid #ff0000'" onMouseOut="document.all.a1.style.border='1px solid #101010'">啊啊啊</A>