function popupbutton(url) {
window.open(url,'_blank','location=no,toolbar=no,menubar=no,resizable=yes,scrollbars=no,status=no,width='+screen.height/2+',height='+screen.height/2)
}

function popupbutton_2(url) {
window.open(url,'_blank','location=no,toolbar=no,menubar=no,resizable=yes,scrollbars=yes,status=no,width=660,height=800')
}