function MailFormOpen() { 
  window.open('https://www.i-call.co.jp/mailForm/','mail','status=yes,scrollbars=yes,resizable=no,location=no,toolbar=no,width=670,height=580');
}

function M4serviceOpen() { 
  window.open('/m4.html','m4','status=no,scrollbars=yes,resizable=no,location=no,toolbar=no,width=420,height=550');
}