
<!--

  function writeCookie(name, value, days)
  {
    var expires = "";
    if (days) 
    {
      var date = new Date();
      date.setTime(date.getTime()+(days*24*60*60*1000));
      var expires = "; expires="+date.toGMTString();
    };
    document.cookie = name+"="+value+expires; //+"; path=/";
  }

  function readCookie(name, default_value)
  {
    var nameEQ = name + "=";
    var ca = document.cookie.split(";");
    for(var i=0;i < ca.length;i++)
    {
      var c = ca[i];
      while (c.charAt(0)==" ") c = c.substring(1,c.length);
      if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }

    writeCookie(name, default_value, 365);

    return default_value;
  }

  function SetBackground()
  {
    var bg = readCookie("background", "black");
    if (bg == "white")
      WhiteBackground();
    if (bg == "black")
      BlackBackground();
  }

  function WhiteBackground()
  {
    document.bgColor = "white";
    document.fgColor = "black";
    writeCookie("background", "white");
  }
   
  function BlackBackground()
  {
    document.bgColor = "black";
    document.fgColor = "white";
    writeCookie("background", "black");
  }
  
  SetBackground();

  //-->