This trick works well as a hover attribute for your links, but can also be applied
to all of your links. Move the mouse over the link to see the effect.
Paste the code
in the <HEAD> of your document.
This link will have a line over and below, when the mouse passes over it.
<HEAD>
<STYLE TYPE="text/css">
<!--
A:hover{text-decoration : underline overline}
-->
</STYLE>
</HEAD>