function permut (flag,img)
{
  if(document.images)
  {
    if(document.images[img].permloaded)
    {
      if(flag == 1)
        document.images[img].src = document.images[img].perm.src
      else
        document.images[img].src = document.images[img].perm.oldsrc
    }
  }
}

function preloadPermut (img,adresse)
{
  if(document.images)
  {
    img.onload = null;
    img.perm = new Image ();
    img.perm.oldsrc = img.src;
    img.perm.src = adresse;
    img.permloaded = true;
  }
}

function showhide(id)
{
  if (document.getElementById)
  {
    obj = document.getElementById(id);
    if(obj.id.match(id) && obj.style.display == "none")
    {
        obj.style.display = "";
    }
    else
    {
        obj.style.display = "none";
    }                  
  }
}

function hide(id)
{
  if(document.getElementById)
  {
    obj = document.getElementById(id);
    obj.style.display = "none";
  }
}