function shem(){
  var str;
  str = 'scrollbars=yes,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,width=860,height=600,screenX=530,screenY=400,left=100,top=100';
  window.open('/shema_proezda.php', "show", str); 
}
function newmail(){
  var str;
  str = 'scrollbars=yes,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,width=450,height=515,screenX=450,screenY=200,left=450,top=200';
  window.open('/mail.php', "show", str); 
}