// Wylaczenie/właczenie inputów firmy
function firm_user_on()
{
  var form=document.forms['form_user_register'];
  
  if(document.getElementById("customer_type1").checked==false)
    {
      form.customer_firm.disabled=true;
      form.customer_nip.disabled=true;
      form.customer_send_firm.disabled=true;
    }  
    else
    {
      form.customer_firm.disabled=false;
      form.customer_nip.disabled=false;
      form.customer_send_firm.disabled=false;
    } 
}