function CheckPassword() {
  var username=document.login.username.value;
  var password=document.login.password.value;
  var login=username + '_' + password;
if (login == 'login_ok') 
  {
  window.open(location.href = username + '_' + password + '.htm',"LogIn", "toolbar=YES, location=NO, status=NO");
  }
else
  {  
  window.open(location.href = 'feil.htm',"LogInError", "toolbar=YES, location=NO, status=NO");
  }
  window.close()
}