function verif_contacts(theForm)
{
	strerreurs="";
	if (theForm.nom.value=="") strerreurs+="- Le nom est un champ obligatoire.\n";
	if (theForm.prenom.value=="") strerreurs+="- Le prenom est un champ obligatoire.\n";
	if (theForm.email.value=="") { strerreurs+="- L'email est obligatoire.\n"; }
	else {
		re = /^[\+\w._-]+@[\w.-]{2,}[.][a-zA-Z]{2,4}$/;
		if (! re.test(theForm.email.value)) {
			strerreurs+="- L'email est mal saisi ou invalide.\n";
		}
		else {
			re = /(@\.)|(\.@)|(\.\.)/;
			if ( re.test(theForm.email.value)) {
				strerreurs+="- L'email est mal saisi ou invalide.\n";
			}
		}
	}
	if (strerreurs.length>0) {
		alert("Erreurs : \n"+strerreurs);return false;
	} else {	
		return true;
	}
}

function changeimg( sens ) { //sens -> 1 ou -1
	img_encours += sens;
	objDiv1.style.display = "block";
	objDiv2.style.display = "block";
	if (img_encours == 0) {
		objDiv1.style.display = "none";
	}
	if (img_encours == myImages.length-1) {
		objDiv2.style.display = "none";
	}
	document.photo.src=myImages[img_encours].src;
	//document.all("photourl").href=myURLs[img_encours];
}

function afficheNav(idNav, open_it) {
	var objNav = document.getElementById(idNav);
	if (objNav == null) return;
	var objImg = document.getElementById('img_'+idNav);
	var isClosed = (objNav.style.display=='none');
	if (open_it == null)
		newState = isClosed;
	else
		newState = open_it;
	//alert(objNav.style.display+' - ');
	if (isClosed) {
		if (newState) {
			// SEB use display='' restore initial state, instead of 'block' wich is not correct
			objNav.style.display='';
			objImg.src='/images/arbre/minus.gif';
			//alert("open : "+objImg.src);
			saveOpenState( idNav, true);
		}
	} else {
		if (!newState) {
			objNav.style.display='none';
			objImg.src='/images/arbre/plus.gif';
			//alert("close : "+objImg.src);
			saveOpenState( idNav, false);
		}
	}
	return false;
}
function saveOpenState(idNav, opened) {
	if (navigator.my_save_states == null)
		navigator.my_save_states = new Array();
	if (opened) {
		navigator.my_save_states[idNav] = true;
		// str = ''; for (i in navigator.my_save_states) str += i + ' '; window.alert( str);
	}
	else
		delete( navigator.my_save_states[idNav]);
}
function restoreStates() {
	// str = ''; for (i in navigator.my_save_states) str += i + ' '; window.alert( str);
	if (navigator.my_save_states != null) {
		for (i in navigator.my_save_states) {
			afficheNav( i, true);
		}
	} 
}