function passchange(elm, msg) {
    if( elm.value == msg )   {
      document.getElementById('passel').innerHTML = '<input type="password" value="" id="login_form_password" name="login_form_password" onclick="passchange(this, \''+msg+'\')" onkeyup="passchange(this, \''+msg+'\')"/>';
      
    }
    else if( elm.value == '' ) {
      document.getElementById('passel').innerHTML = '<input type="text" value="' + msg + '" id="login_form_password" name="login_form_password" onclick="passchange(this, \''+msg+'\')" onkeyup="passchange(this, \''+msg+'\')" />';
    }
    setTimeout(function() { document.getElementById('login_form_password').focus(); }, 10);
  }
  function passload( elm, msg ) {
     if( elm.value == '' ) {
        document.getElementById('passel').innerHTML = '<input type="text" value="' + msg + '" id="login_form_password" name="login_form_password" onclick="passchange(this, \''+msg+'\')" onkeyup="passchange(this, \''+msg+'\')"/>';
      }
      
  }

function check_orderform(formular)
{

  if (formular.firstname.value=="")
  {
        alert("Povinná položka - Jméno !");
        formular.firstname.focus();
        return false;
  }
  else if (formular.surname.value=="")
  {
        alert("Povinná položka - Příjmení !");
        formular.surname.focus();
        return false;
  }
  else if (formular.phone.value=="")
  {
        alert("Povinná položka - Telefon !");
        formular.phone.focus();
        return false;
  }
  else if (formular.email.value=="")
  {
        alert("Povinná položka - Email !");
        formular.email.focus();
        return false;
  }
  else if (formular.email.value!="") 
  {
    if (window.RegExp)
    {
      re = new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$");
      if (!re.test(formular.email.value))
      {
        alert("Email je chybný !");
        formular.email.focus();
        return false;
      }
    }  
  }
  else
    return true;
}