function effacecomment()
{
  document.getElementById("listecomment").style.display = "none";
  document.getElementById("formcomment").style.display = "none";
}

function affichecomment()
{
  document.getElementById("listecomment").style.display = "block";
  document.getElementById("formcomment").style.display = "none";
}

function afficheformcomment()
{
  document.getElementById("listecomment").style.display = "none";
  document.getElementById("formcomment").style.display = "block";
}