IE4 = (document.all) ? 1 : 0;
NS4 = (document.layers) ? 1 : 0;
VERSION4 = (IE4 | NS4) ? 1 : 0;

if (!VERSION4) event = null;

function helpGetOffset(obj, coord) {
var val = obj["offset"+coord] ;
if (coord == "Top") val += obj.offsetHeight;
while ((obj = obj.offsetParent )!=null) {
val += obj["offset"+coord];
if (obj.border && obj.border != 0) val++;
}
return val;
}

function helpDown () {
if (IE4) document.all.helpBox.style.visibility = "hidden";
if (NS4) document.helpBox.visibility = "hidden";
}

function helpOver (event,texte) {
if (!VERSION4) return;

var ptrObj, ptrLayer;
if (IE4) {
ptrObj = event.srcElement;
ptrLayer = document.all.helpBox;
}
if (NS4) {
ptrObj = event.target;
ptrLayer = document.helpBox;
}

if (!ptrObj.onmouseout) ptrObj.onmouseout = helpDown;

var str = '<DIV CLASS="helpBoxDIV">'+texte+'</DIV>';
if (IE4) {
ptrLayer.innerHTML = str;
ptrLayer.style.top = helpGetOffset (ptrObj,"Top") + 5; // Déplacement vers le bas
ptrLayer.style.left = helpGetOffset (ptrObj,"Left")+ 20; // Déplacement vers la droite
ptrLayer.style.visibility = "visible";
}
if (NS4) {
ptrLayer.document.write (str);
ptrLayer.document.close ();
ptrLayer.document.bgColor = "yellow";
ptrLayer.top = ptrObj.y + 20;
ptrLayer.left = ptrObj.x;
ptrLayer.visibility = "show";
}
}