scroller på popup

hvordan kan jeg få en scroller på denne popup:

<script language="JavaScript">

setup='toolbar=no,location=no,directories=no,status=no,menubar=no,width=575,height=700'

setup += 'scrollbars=no,resizable=no'
pop = window.open ("","pop",setup)
pop.document.write('<head>');
pop.document.write('<Title>');
pop.document.write('Desi Party');
pop.document.write('</Title>');
pop.document.write('<script language="javascript">');
pop.document.write('setTimeout(');
pop.document.write('"self.close()');
pop.document.write(';",50000000)');
pop.document.write('</');
pop.document.write('script>');
pop.document.write('</head>');
pop.document.write('<body bgcolor=#ffffff>');
pop.document.write('<center><img src=http://www.des.dk/party.jpg></a></center>');
pop.document.write('<center><h6></h6></center>');
pop.document.write('</body>');

</script>