<script type="text/javascript">
function changeIt (obj,col,bor)
{
obj.style.backgroundColor=col;
obj.style.border=bor;
}
</script>
...
<td><a href="www.mysite.com" OnMouseOver="changeIt(this.parentNode,'#FFFF00','1px solid')" OnMouseOut="changeIt(this.parentNode,'#FF00FF','2px dotted')">Click It</a></td>
....