// JavaScript Document
function over(image){
	document.getElementById(image).src='/img/nav/'+image+'_over.gif';
}
function out(image){
	document.getElementById(image).src='/img/nav/'+image+'.gif';
}
function affiche_form(){
	document.getElementById('form_message').style.display = 'block';
	document.getElementById('liste_messages').style.display = 'none';
}
function affiche_messages() {
	document.getElementById('liste_messages').style.display = 'block';
	document.getElementById('form_message').style.display = 'none';
}