function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function swapImage() { //v3.0
  var i,j=0,x,a=swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

var N, IE;
var coll = ""
var styleObj = ""

<!-- ------- navigateur ???? ------------>
if (parseInt(navigator.appVersion) >= 4) {
	if (navigator.appName == "Netscape") {
		N=true; 
	} else {
		IE=true;
		coll = "all."
		styleObj = ".style"
	}
}
if (!N && !IE) {
top.location.href="noDHTML.htm"
}

<!---- ------ Objet ------------------->
function getObject(obj) {
var theObj

if (typeof obj == "string") {
	theObj = eval("document." + coll + obj +styleObj);
}
else {
theObj = obj
}
return theObj
}

<!---- ------ visible ------------------->
function show(obj)
{
var theObj = getObject(obj)

theObj.visibility = "visible"
}

<!---- ------ Hauteur ------------------->
function getObjHeight(obj)
{
var theObj = getObject(obj)

if (N) { return theObj.clip.height;}
else { return theObj.clientHeight;}
}

<!---- ------ Largeur ------------------->
function getObjWidth(obj)
{
var theObj = getObject(obj)

if (N) { return theObj.clip.width;}
else { return theObj.clientWidth;}
}

<!---- ------Largeur Fenetre ------------------->
function getInsideWindowWidth()
{
if (N) { return window.innerWidth}
else { return document.body.clientWidth}
}
<!---- ------Hauteur Fenetre ------------------->
function getInsideWindowHeight()
{
if (N) { return window.innerHeight}
else { return document.body.clientHeight}
}
<!---- ------ positionner, centrer ------------------->
function centerIt(obj) {
var theObj = getObject(obj)
var contentObj = eval("document." + coll + obj)
var x = Math.round((getInsideWindowWidth()/2)-getObjWidth(contentObj)/2)
var y = Math.round((getInsideWindowHeight()/2)-getObjHeight(contentObj)/2)
shiftTo(obj,x,y)
show(obj);
}

function handleResize(obj)
{
if (N) {location.reload();}
else { centerIt(obj);}
}


<!---- ------ positionner, fixe ------------------->
function shiftTo(obj, x, y)
{
var theObj = getObject(obj)

if (N) {theObj.moveTo(x,y)}
else { 
theObj.pixelLeft = x
theObj.pixelTop = y
}
}