var vis = new Array();
	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;
	}
	function MM_swapImage() { //v3.0
	 var i,j=0,x,a=MM_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 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')?'block':(v='hide')?'none':v; }
	   obj.display=v; }
	}
	function swap_couche(couche){
			if (vis[couche] == 'show'){
					MM_swapImage('triangle'+couche,'','/Contenus/Media/voir.gif?'+couche,1)
					MM_showHideLayers('Layer'+couche,'','hide');
					vis[couche] = 'hide';
			} else {
					MM_swapImage('triangle'+couche,'','/Contenus/Media/cacher.gif?'+couche,1)
					MM_showHideLayers('Layer'+couche,'','show');
					vis[couche] = 'show';
			}
	}