var ns4=(document.layers)?true:false; 
var ns6=(document.getElementById&&navigator.appName.indexOf("Netscape")>=0)?true:false; 
var ie=(document.all || document.all!="undefiened")?true:false; 
var timer=null;

function MM_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;
}

function MM_findObj(n, d) { //v4.01
 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&&id.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
 if(!x && d.getElementById) x=d.getElementById(n); return x;
 }

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 fermer()
  {
	if (ns4 || ns6)
	  {
		for (var i=1 ; i<=5 ; i++)
		  {
			if (document.layers['menu'+i] != null)
			  {document.layers['menu'+i].visibility='hidden';}
		  }
	  } 
	else if (ie)
	  {
		for (var i=1 ; i<=5 ; i++)
		  {
			if (document.all['menu'+i] != null)
			  {document.all['menu'+i].style.visibility="hidden";}
		  }
	  }
  }

function actualiser_menu()
  {
	if (self.innerWidth)
	  {bord = (self.innerWidth-760)/2;}
	else if (document.documentElement && document.documentElement.clientWidth)
	  {bord = (document.documentElement.clientWidth-760)/2;}
	else if (document.body)
	  {bord = (document.body.clientWidth-760)/2;}
	else return;
	
	if (bord>0)
	  {
		if (ie)
		  {
			menu1.style.left=167+bord;
			menu2.style.left=309+bord;
			menu3.style.left=454+bord;
		  }
		else
		  {
			document.menu1.left=159+bord;
			document.menu2.left=301+bord;
			document.menu3.left=446+bord;
		  }
	  }
	else
	  {
		if (ie)
		  {
			menu1.style.left=167;
			menu2.style.left=309;
			menu3.style.left=454;
		  }
		else
		  {
			document.menu1.left=167;
			document.menu2.left=309;
			document.menu3.left=454;
		  }
	  }
  }