function get_cookie(name)
{
  cookie_name = name + "=";
  cookie_length = document.cookie.length;
  cookie_begin = 0;
  while (cookie_begin < cookie_length)
  {
   value_begin = cookie_begin + cookie_name.length;
   if (document.cookie.substring(cookie_begin, value_begin) == cookie_name)
   {
    var value_end = document.cookie.indexOf (";", value_begin);
    if (value_end == -1) value_end = cookie_length;
    return unescape(document.cookie.substring(value_begin, value_end));
   };
   cookie_begin = document.cookie.indexOf(" ", cookie_begin) + 1;
   if (cookie_begin == 0) break;
  }
  return null;
};
function set_cookie(name, value, expires)
{
  if(!expires) expires = new Date();
  document.cookie = name + "=" + escape(value) + "; expires=" + expires.toGMTString() +  "; path=/";
};
function save_cookie(v, name)
{
  expires = new Date();
  expires.setTime(expires.getTime() + (1000 * 86400 * 365));
  set_cookie(name, v, expires);
};
function OnChange(obj, val, txt)
{
  try
  {
   save_cookie(val, "group");
   var h = document.getElementById('hdn_group');
   if(h) h.value = val;
  }catch(e){};
};
function InitGroup(name)
{
  var gv = get_cookie("group");
  var so = document.getElementById(name);
  var sh = document.getElementById('hdn_group');
  var v;
  try{
   for(var i=0; i<so.options.length; i++)
    if(so.options[i].value == gv)
    {
     so.options[i].selected = true;
     sh.value = gv;
    };
  }catch(e){};
  var a = document.getElementById('play_link');
  if ( a != null )
  {
   a.href = "/toplay.php?group=" + so.options[so.selectedIndex].value;
  }
  Site.SelToDiv(name, {'readonly':true, 'onselect':'OnChange'});
  return true;
};
InitGroup('group');