var wait = 500;
var hideTimer;
var view = 0;

function keepOpen() {
  if (hideTimer != null) clearTimeout(hideTimer);
}

function hide() {
    if (view == 1) {view = 0; hideTimer = setTimeout("hideAll()", wait);}
}

function montre(id) {
  view = 1;keepOpen();var d = document.getElementById(id);
	for (var i = 1; i<=18; i++) {
		if (document.getElementById('smenu'+i)) {document.getElementById('smenu'+i).style.display='none';}
	}
  if (d) {d.style.display='block';}
}

function change(id) {
  for (var i=1; i<19; i++ ) { 
    rub_x = 'menu' + i;
    if(rub_x != id) {document.getElementById(rub_x).src = "../img/2_gauche/menuv2/" + rub_x + "_off.gif";}
    else {document.getElementById(rub_x).src = "../img/2_gauche/menuv2/" + rub_x + "_on.gif";}
  }
}

function hideAll() {
    clearTimeout(hideTimer);
    var rub_x;
    var srub_x;
    var srub_x_x;
    for (var j=1; j<19; j++ ) {
        rub_x = 'menu' + j;
        srub_x = 'smenu' + j;
        document.getElementById(rub_x).src = "../img/2_gauche/menuv2/" + rub_x + "_off.gif";
    	document.getElementById(srub_x).style.display = 'none'; // masque tous les layers sous-rubriques de niveau 1
    }
}