function verif() { 

    
  var erreur = "";
   
	if(document.forms["pre-subscribe"].compagny.value == "")
     {
      erreur = " Company is empty. ";
     }
	 
    if(document.forms["pre-subscribe"].first_name.value == "")
     {
      erreur = " User first name is empty. ";
     }
	if(document.forms["pre-subscribe"].last_name.value == "")
     {
      erreur = " Last name is empty. ";
     }
	if(document.forms["pre-subscribe"].adress.value == "")
     {
      erreur = " Adress is empty. ";
     }
	if(document.forms["pre-subscribe"].postal.value == "")
     {
      erreur = " Postal code is empty. ";
     }
	if(document.forms["pre-subscribe"].city.value == "")
     {
      erreur = " City is empty. ";
     }
	if(document.forms["pre-subscribe"].country.value == "")
     {
      erreur = " Country is empty. ";
     }
	if(document.forms["pre-subscribe"].vat.value == "")
     {
      erreur = " Vat n° is empty. ";
     }
	if(document.forms["pre-subscribe"].mailU.value == "")
     {
      erreur = " Email is empty. ";
     }
  
   if(erreur == "")
     {
     document.forms["pre-subscribe"].submit();
     }
   else
     {
     alert (erreur);
     }
 }
 
 function clearField(){
	 document.forms["codeForm"].str.value = "";
 }