function valider_form_recherche(theForm) 
  {  
		if (theForm.pChamp1.value.length < 14)
		{
			alert("You have to seize a SIRET of 14 figures !");
			theForm.pChamp1.focus();
			return false;
		}
		if ( !isNumeric(theForm.pChamp1.value) )
		{
			alert("The SIRET contains only figures !");
			theForm.pChamp1.focus();
			return false;
		}

		//cocher au moins une case
		champ18 = document.getElementById('pChamp18').checked;
		champ19 = document.getElementById('pChamp19').checked;
		if (!champ18 && !champ19)
		{
			alert("Please tick a division !");
			theForm.pChamp18.focus();
			return false;
		}

	return true;
  }