function setUserForm(GroupID){
 
   if (GroupID == 5){
   
        // klient indywidualny
        document.user_add.Name.disabled = true;
        document.user_add.Surname.disabled = true;
        document.getElementById('Name').className = 'clInputDisabled';
        document.getElementById('Surname').className = 'clInputDisabled';
        
        
        // firma  
        document.user_add.CompanyName.disabled = false;
        document.user_add.CompanyRegon.disabled = false;
        document.user_add.CompanyNip.disabled = false;
        document.getElementById('CompanyName').className = 'clInput';
        document.getElementById('CompanyRegon').className = 'clInput';
        document.getElementById('CompanyNip').className = 'clInput';
   
   } else {
   
        // klient indywidualny
        document.user_add.Name.disabled = false;
        document.user_add.Surname.disabled = false;
        document.getElementById('Name').className = 'clInput';
        document.getElementById('Surname').className = 'clInput';
        
        
        // firma  
        document.user_add.CompanyName.disabled = true;
        document.user_add.CompanyRegon.disabled = true;
        document.user_add.CompanyNip.disabled = true;
        document.getElementById('CompanyName').className = 'clInputDisabled';
        document.getElementById('CompanyRegon').className = 'clInputDisabled';
        document.getElementById('CompanyNip').className = 'clInputDisabled';
   }

}