function MM_reloadPage(init) {  //reloads the window if Nav4 resized
 if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
   document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
 else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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];}
}

var vis = new Array();

function swap_couche(couche)
{
    if (vis[couche] == 'hide')
    {
        MM_swapImage('triangle'+couche,'','img/design/puces/cacher.gif?'+couche,1)
        MM_showHideLayers('Layer'+couche,'','show');
        vis[couche] = 'show';
    }
    else
    {
        MM_swapImage('triangle'+couche,'','img/design/puces/voir.gif?'+couche,1)
        MM_showHideLayers('Layer'+couche,'','hide');
        vis[couche] = 'hide';
    }
}

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_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;
//	p=(p=='show')?'hidden':(p='hide')?'visible':p;
	}
  obj.display=v;
//  obj.visibility=p;
 }
}

window.onload=function(){
	swap_couche('Graph1');	
	swap_couche('Graph2');
	swap_couche('Graph3');
	swap_couche('Graph4');
	swap_couche('Graph1');	
	swap_couche('Graph2');
	swap_couche('Graph3');
	swap_couche('Graph4');
}