function insertComm(contenu, id)
{
  var OAjax;
  if (window.XMLHttpRequest) OAjax = new XMLHttpRequest();
  else if (window.ActiveXObject) OAjax = new ActiveXObject('Microsoft.XMLHTTP');
  OAjax.open('POST',"insertComm.php",true);
  OAjax.onreadystatechange = function()
  {
      if (OAjax.readyState == 4 && OAjax.status==200)
      {
		  if (document.getElementById)
          {   
			  if (OAjax.responseText =='true') { /* OK */
					document.getElementById('msg').innerHTML='<table border="1" width="500" bgcolor="#33CC00"><tr><td>Votre commentaire a bien été ajouté !</td></tr></table><br />';
					document.getElementById('envoi').disabled = 'disabled'
              }else{                             /* PAS OK */
					document.getElementById('msg').innerHTML=OAjax.responseText;
              }
          }     
      }
  }
  OAjax.setRequestHeader('Content-type','application/x-www-form-urlencoded');
  OAjax.send('contenu='+contenu+'&id='+id); 
}