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,def) {
  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 def;
}
function SetCookie(name,value) {
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var path = (2 < argc) ? ("; path="+argv[2]) : ("");
  var expdate = new Date();
  expdate.setTime(expdate.getTime()+(5*365*24*60*60*1000)); 
  s = name + "=" + escape(value) + "; expires=" + expdate.toGMTString() + path;
  document.cookie = s;
}