function rien() {}

var IE4 = (document.all && !document.getElementById && !window.opera) ? true : false;
var NN4 = document.layers? true : false;
var IES = (document.all && document.getElementById && !window.opera) ? true : false;
var NN6 = (!document.all && document.getElementById )? true : false;

var bandeau_encours = null;
var bandeau_classes = {};

if (NN4)
document.captureEvents(Event.MOUSEMOVE);
document.onmousemove = setMouseCoordinate;



function bandeau_cacher(id)
{
	if (NN4)
	{
		document.layers[id].visibility = "hidden";
	}
	else if (IE4)
	{
      e = document.all[id];
		document.all(id).style.visibility = "hidden";
	}
	else
	{
      e = document.getElementById(id);
		document.getElementById(id).style.visibility = "hidden";
	}

   bandeau_encours = null;
}

function bandeau_montrer(id)
{
	if (bandeau_encours != null)
		bandeau_cacher(bandeau_encours);

   var e = null;

	if (NN4)
	{
		document.layers[id].visibility = "visible";
	}
	else if (IE4)
	{
      e = document.all[id];
		e.style.visibility = "visible";
	}
	else
	{
      e = document.getElementById(id);
		e.style.visibility = "visible";
	}
/*
   var a = String(e.getAttribute('class') || e.getAttribute('className') || ''); 
   if( -1 == a.search(/(^|\s+)montre(\s+|$)/)){ a = "montre " + a;}
   :
   e.setAttribute('class',a); 
   e.setAttribute('className',a); 
*/

	bandeau_encours=id;
}