var evan ='';
var evan2 = '';

function init() {

}

//Affichage layer
function show_layer(lay){
if (isNav4) {
document [lay].visibility='Show';}
if (isAdv) {
document.getElementById(lay).style.visibility='visible';}
else {
document.all [lay].style.visibility='Visible';}
}
//Affichage layer différé
function show2_layer(lay,x){
if (evan != ''){
clearTimeout(evan);}
evan2 = setTimeout('show_layer(\''+lay+'\')',x)
}
//Disparition layer
function hide_layer(lay){
if (evan2 != ''){
clearTimeout(evan2);}
if (isNav4) {
document [lay].visibility='Hide';}
if (isAdv) {
document.getElementById(lay).style.visibility='hidden';}
else {
document.all [lay].style.visibility='Hidden';}
}
//Disparition layer différée
function hide2_layer(lay,x){
evan = setTimeout('hide_layer(\''+lay+'\')',x);
}


function img_act(lyrName,imgName) {
if (isNav4) {document.layers [lyrName].document [imgName].src = "images/" + imgName + "b.gif";}
if (isIE) {document.all [lyrName].document [imgName].src = "images/" + imgName + "b.gif";}
if (isAdv) {document [imgName].src = "images/" + imgName + "b.gif";}
}

function img_inact(lyrName,imgName) {
if (isNav4) {document.layers [lyrName].document [imgName].src = "images/" + imgName + ".gif";}
if (isIE) {document.all [lyrName].document [imgName].src = "images/" + imgName + ".gif";}
if (isAdv) {document [imgName].src = "images/" + imgName + "b.gif";}
}