function SetCookie (name, value, expdate)
  {
  if (!expdate)
    expdate = new Date ();
  document.cookie =    name + "=" + escape(value) + ";expires=" + expdate.toGMTString() + ";path=/" + ";"  }
 
function GetCookie (name)
  {
  var dcookie = document.cookie;
  var cname = name + "=";
  var clen = dcookie.length;
  var cbegin = 0;
  while (cbegin < clen)
    {
    var vbegin = cbegin + cname.length;
    if (dcookie.substring(cbegin, vbegin) == cname)
      {
      var vend = dcookie.indexOf (";", vbegin);
      if (vend == -1)
        vend = clen;
      return unescape(dcookie.substring(vbegin, vend));
      }
    cbegin = dcookie.indexOf(" ", cbegin) + 1;
    if (cbegin == 0)
      break;
    }
  return null;
  }
 
function DelCookie (name)
  {
  document.cookie = name + "=nil;" + "expires=Thu, 01-Jan-70 00:00:01 GMT;" + "path=/;"
  }
 
function LstCookie ()
  {
  document.write ("CookieVector = [" + document.cookie + "] [length=" + document.cookie.length + "]");
  }