<style type="text/css">
a.linktres:link {
color:#ffff00;
text-decoration:none;
}
a.linktres:visited {
color:#000000;
text-decoration:line-through;
}
a.linktres:hover {
color:#000000;
background-color:#FF0000;
text-decoration:none;
font-size:100%;
}
a.linktres:active {
color:#c0c0c0;
text-decoration:none;
background-color:#ffff00;
}
<!–[if lte IE 7]>
	<link rel=”stylesheet” type=”text/css” href=”ie7hacks.css” />
<![endif]–>
</style>