function GetCookie (name) {
      var arg = name + "=";
      var alen = arg.length;
      var clen = document.cookie.length;
      var i = 0;
      while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg) {
            var endstr = document.cookie.indexOf (";", j);
            if (endstr == -1) endstr = document.cookie.length;
            return unescape(document.cookie.substring(j, endstr));
        }
    	i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break; 
      }
      return null;
    }

    function SetCookie (name,value,expires,path,domain,secure) {
      document.cookie = name + "=" + escape (value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
    }

    function DeleteCookie (name,path,domain) {
      if (GetCookie(name)) {
        document.cookie = name + "=" + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
      }
    }

    function RememberLogin(uid, chk){
        var o=document.getElementById(chk);
       if (o!=null&&o.checked) { 
        var duree = 2;  // en jours
        var date_expire = new Date();
        date_expire.setTime(date_expire.getTime() + (duree*24*60*60*1000));
        SetCookie("userid",uid,date_expire);
      }
     else {DeleteCookie("userid");}  
    }