If I am understanding correctly, you want expanded information on a particular listing. This is one way to do it.
<script language="JavaScript">
<!-- hide from JavaScript-challenged browsers
function openWindow() {
popupWin = window.open('details.php', 'remote', 'scrollbars,width=400,height=200')
}
// details.php being a file that will call the db for the additional
//info you desire and place it in a small 400 pixel window
// done hiding -->
</script>
<HTML>
<BODY>
<? PHP Code...
{
print "<tr>";
print "<td><a href='javascript:openWindow();'>$ligne->callsign</A></td>";
print "<td>$ligne->name</td>";
print "<td>$ligne->email</td>";
print "<td>$ligne->hours</td>";
print "<td>$ligne->last_flt</td>";
print "</tr>";
}
</BODY>
</HTML>