var popwin=null;

function picpop(id,x,y) {
 if (popwin && !popwin.closed) {popwin.close();};
 popwin=window.open('picpop.php?id='+id+'&x='+x+'&y='+y,'','width='+x+',height='+y+',scrollbars=no,resizable=no,menubar=no,status=no,directories=no,location=no,toolbar=no');
 };