function getCookieVal (offset)
  {
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1)
      endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
  }
  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)
        return getCookieVal (j);
      i = document.cookie.indexOf(" ", i) + 1;
      if (i == 0) break; 
    }
    return '';
  }
  function SetCookie (name, value)
  {
    var argv = SetCookie.arguments;
    var argc = SetCookie.arguments.length;
    var path = (argc > 2) ? argv[2] : null;
    var expires = (argc > 3) ? argv[3] : null;      
    var domain = (argc > 4) ? argv[4] : null;
    var secure = (argc > 5) ? argv[5] : false;
    document.cookie = name + "=" + escape (value) +
      ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
      ((path == null) ? "" : ("; path=" + path)) +
      ((domain == null) ? "" : ("; domain=" + domain)) +
      ((secure == true) ? "; secure" : "");
  }
  function ResetCookie() {
    SetCookie("userguid", 0, null, "/");
  }    
  function setLoginCookie(user, username, persist) {
    var expdate = new Date();
    if ("1"==persist) {
      expdate.setTime (expdate.getTime() + 365*10 * (24 * 60 * 60 * 1000));     
      SetCookie("user", user, "/", expdate)   
      SetCookie("username", username, "/", expdate)      
    }
    else {
      SetCookie("user", user, "/")
      SetCookie("username", username, "/")
    }     
  }