function afficheChamps() {
	if((document.getElementById('particulier').checked==true) || (document.getElementById('organisateur').checked==true) || (document.getElementById('journaliste').checked==true) || (document.getElementById('exposant').checked==true) || (document.getElementById('autres_professionnels').checked==true)){
		//Effect.Appear('societe');
		if($('societe').style.visibility=='hidden') {$('societe').style.visibility='visible';}
		//$('societe').show();
		//Effect.BlindDown('societe');
		}
	if(document.getElementById('particulier').checked==true){
		if($('societe').style.visibility=='visible') {$('societe').style.visibility='hidden';}
		//Effect.Fade('societe');
		//$('societe').hide();
		//Effect.BlindUp('societe');
		}		
}