// JavaScript Document 4000 octets max par cookie 20 cookies par site 300 cookies par pc
//_______________________________________________________________________________
	function  writeCookie(name, value, hours)
	{
	  var expire = "";
	  if(hours != null)
	  {
		expire = new Date((new Date()).getTime() + hours * 3600000);
		expire = "; expires=" + expire.toGMTString();
	  }
	  document.cookie = name + "=" + escape(value) + expire;
	}
//_______________________________________________________________________________
	function readCookie(name)
	{
	  var cookieValue = "";
	  var search = name + "=";
	  if(document.cookie.length > 0)
	  { 
		offset = document.cookie.indexOf(search);
		if (offset != -1)
		{ 
		  offset += search.length;
		  end = document.cookie.indexOf(";", offset);
		  if (end == -1) end = document.cookie.length;
		  cookieValue = unescape(document.cookie.substring(offset, end))
		}
	  }
	  return cookieValue;
	}

//Vérification de l'existence du cookie. pas testé !
function VerCookie(Name) { 
          var search = Name + "=" 
          if (document.cookie.length > 0) { // si il existe au moins un cookie 
                    offset = document.cookie.indexOf(search) 
                    if (offset != -1) { // si le cookie recherché existe 
                        return offset 
                    } 
                    else { //le cookie n'existe pas 
                    return -1 
                    } 
          } 
}