ns6 = (document.getElementById&&!document.all)?true:false;
var encours="";
function AffLayer(liste) {
	var nomlayer=liste.options[liste.selectedIndex].value;
	if (document.all) {
		if (encours!="") {document.all[encours].style.visibility="hidden";}
		encours=nomlayer;
		if (nomlayer!="") {document.all[encours].style.visibility="visible";}
	}
	if (document.layers) {
	  	if (encours!="") {document.layers[encours].visibility="hide";}
		encours=nomlayer;
		if (nomlayer!="") {document.layers[encours].visibility="show";}
	}
	if (ns6 == true ){
		if (encours!="") {MM_showHideLayers(encours,'','hide');}
		encours=nomlayer;
		if (encours!="") {MM_showHideLayers(encours,'','show');}
	}	
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function IS_show(name)
	{
	document.getElementById(name).style.display="block";
	}

function MM_findObj(n, d) { //v4.0
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);
if(!x && document.getElementById) x=document.getElementById(n); return x;
}