function rover(mn){
  mn.style.backgroundPosition = "0px -25px";
}

var actu = '';
function rpover(mn,ph){
  if(mn!=actu){
    //rollover
    document.getElementById(mn).style.backgroundPosition = "0px -32px";
    if(actu!=''){
      
      document.getElementById(actu).style.backgroundPosition = "0px 0px";
    }
    actu = mn;
    //swap photo
    document.getElementById("phcentre").src = './images/'+ph;
  }
}


function rout(mn){
  mn.style.backgroundPosition = "0px 0px";
}

function swapPhoto(ph) {
  document.getElementById("photogm").src = ph;
}

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];}}
}
//folding menu
//rollOverMenu(rang,sous-menu,photo)
var ouvert = 0;
var nmenu;
var smenu = 0;
var defaut;
function initMenu(n,p) {
  nmenu = n;
  for(i=1;i<=n;i++){
    document.getElementById("md"+i).style.top = ((i-1)*32)+"px";
  }
  defaut = p;
}

function rollOverMenu(m,s,p) {
  //affichage photos
  if(p!=''){
    document.getElementById("phcentre").src = './images/'+p;
  }else{
    document.getElementById("phcentre").src = './images/'+defaut;
  }
  //menu
  if(m!=ouvert && ouvert>0) {
    fermeMenu(m,s);
  }else{
    ouvreMenu(m,s);
  }
}

function fermeMenu(m,s) {
  if(smenu){
    //ferme le menu en cours
    document.getElementById("smd"+ouvert).style.display = "none";
    //remonte le menu
    for(i=ouvert+1;i<=nmenu;i++) {
      var y = 32*(i-1);
      document.getElementById("md"+i).style.top = y+"px";
    }
  }
  document.getElementById("tm"+ouvert).style.backgroundPosition = "0px 0px";
  ouvert = 0;
  //ouvre le menu
  ouvreMenu(m,s);
}

function ouvreMenu(m,s) {
  //ouvre le menu
  if(s){
    document.getElementById("smd"+m).style.display = "block";
    var h = document.getElementById("smd"+m).offsetHeight;
    //descend le menu
    for(i=m+1;i<=nmenu;i++) {
      var top = h+(32*(i-1));
      document.getElementById("md"+i).style.top = top+"px";
    }
    smenu = 1;
  }else{
    smenu = 0;
  }
  //rollover sur les titres
  document.getElementById("tm"+m).style.backgroundPosition = "0px -32px";
  ouvert = m;
}