function open_popup(url)
{
window.open(url, 'popup', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=450,height=400' );
}

function open_popup2(url)
{
window.open(url, 'popup', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=700,height=400' );
}