Something

<?
 if($_GET['s']=='') { echo '<font color=white>Please click on a TV Show</font> '; }
 if($_GET['s']=='24') { include 'pages/epnav'; }
 if($_GET['s']=='friends') { include 'pages/epnav'; }
 if($_GET['s']=='house') { include 'pages/epnav'; }
 if($_GET['s']=='prisonbreak') { include 'pages/epnav'; }
 if($_GET['s']=='southpark') { include 'pages/epnav'; }
 if($_GET['s']=='simpsons') { include 'pages/epnav'; }
?>