To add a line above the floated list, use the shorthand rule "border-top: 1px solid #666;". Netscape 4 does not like this rule, so it should be hidden from the browser using "@import".
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CSS CODE
ul#navigation
{
list-style-type: none;
margin: 0;
padding: 0;
border-top: 1px solid #666;
}
ul#navigation .left
{
float: left;
width: 5em;
}
ul#navigation .right
{
float: right;
width: 5em;
}
HTML CODE
<p>
Lorem ipsum dolor sit amet...
</p>
<ul id="navigation">
<li class="left"><a href="#">Back</a></li>
<li class="right"><a href="#">Next</a></li>
</ul>