var     ns  = (document.layers) ? true : false;                // ns4x
var     dom = (document.getElementById) ? true : false;        // DOM compatible browser (ie6+, ns6+, mozilla...)
var     ie  = (document.all) ? true : false;                   // ie4x

function        menuCss(id, cls)
{
  if (dom)
    {      
      var m = document.getElementById(id);
      if (m)
        m.className = cls;
    }
}

function	changeCss(e, cls)
{
  if (dom && e)
    e.className = cls;
}

function	setBgColor(c){
  document.body.style.backgroundColor=c;
}

function	setMgColor(c){
  document.getElementById('mg').style.backgroundColor=c;
}

function	getCoordsOfElement(e)
{
  if (!e)
    return new coords(0, 0);

  var r = new coords(e.offsetLeft, e.offsetTop);
  var l = null
  for (e = e.offsetParent; e; e = e.offsetParent) {
    //alert(e.tagName+'='+e.id);
    r.add(e.offsetLeft, e.offsetTop);
    if (e.offsetTop != 0)
     l = e;
  }
  return r;
}
function	coords(ex, ey)
{
  if (!ex)
    this.x = 0;
  else
    this.x = ex;
  if (!ey)
    this.y = 0;
  else
    this.y = ey;
  
  this.addC = function(c) { this.x += c.x; this.y += c.y; };
  this.add = function(nx, ny) {this.x += nx; this.y += ny; }
  this.addX = function(nx) { this.x += nx; };
  this.addY = function(ny) { this.y += ny; };
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

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&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.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_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function suprim_layer() {
document.getElementById('Layer1').style.display='none';
document.getElementById('Layer3').style.display='none';
}

function affiche_layer() {
document.getElementById('Layer1').style.display='block';
document.getElementById('Layer3').style.display='block';
}
function suprim_allopass() {
document.getElementById('Layer2').style.display='none';
}
function affiche_allopass() {
document.getElementById('Layer2').style.display='block';
}
//setTimeout("suprim_layer()", Math.random()*10000)