<?php
list($width,$height)=getimagesize("Sgatlantis.jpg");
$window="onclick=\"window.open('Sgatlantis.jpg',
'mywindow',
'location=no,status=no,scrollbars=no,toolbar=no,width=".$width.",height=".$height."');\"";
$href="javascript: void(0)";
echo "<a href='".$href."' ".$window."><img src='Sgatlantis.jpg' width='200' border='0' alt=''></a>";
?>