// JavaScript Document
function popup(page, w, h) {
	// ouvre une fenetre sans barre d'etat, ni d'ascenceur
	//w = 500;
	//h	= 410;
	var top=(screen.height-h)/2;
	var left=(screen.width-w)/2;
	myPopup = window.open(page,'popup','top='+top+', left='+left+', width='+w+', height='+h+', scrollbars=yes');	
	myPopup.focus();
}
function montre(id) {
var a = document.getElementById('snav'+id);
	for (var i = 0; i<=4; i++) {
		if (document.getElementById('snav'+i)) {document.getElementById('snav'+i).style.display='none';}
	}
if (a) {a.style.display='block';}
}
function swapimg(id, bool) {
	document.images['nav'+id].src = (bool=='off') ? 'img/nav'+id+'-off.gif':'img/nav'+id+'-on.gif';
}
function swapdesc(id, titre, desc) {
	var a = document.getElementById(titre+id);
	var b = document.getElementById(desc+id);
	for (var i = 1; i<=4; i++) {
		if (document.getElementById(desc+i) && i!=id) {document.getElementById(desc+i).style.display='none';}
		if (document.getElementById(titre+i) && i!=id) {document.getElementById(titre+i).className='';}
	}
	if (b) {
		a.className = 'active';
		b.style.display = 'block';
	}
}