$.fn.extend({'ClickStatistic': ClickStatistic});

function ClickStatistic(groupId, description)
{
  var CLICK_STATISTICS_URL = '/stat/click/?data=1,';

  this.data('description', description);
  this.each(function(){
    if($(this).attr('tagName') == 'A')
    {
        var description = $(this).data('description');
        if( !description )
        {
            description =  $.trim($(this).text());
            description = (!description) ? $.trim($(this).attr('title')) : description;

            if( !(/\S/.test(description)) )
            {
                var oImg = $(this).children("img");
                if(oImg.size() > 0)
                {
                  oImg = $(oImg).get();
                  if($(oImg).attr('title'))
                  {
                    description = $.trim($(oImg).attr('title'));
                  }
                  else if($(oImg).attr('alt'))
                  {
                    description = $.trim($(oImg).attr('alt'));
                  }
                }
            }
        }

        if( groupId && description && $(this).attr('href') )
        {
            data = {
              group_id:    groupId,
              description: description,
              url: $(this).attr('href')
            };

						$(this).data('group_id', groupId);
						$(this).data('description', description);
						$(this).data('url', $(this).attr('href'));
						$(this).data('stat_url', CLICK_STATISTICS_URL + encodeURIComponent(Base64.encode(JSON.stringify(data))).replace(/\//g, '-').replace(/\+/g,'*'));

            $(this).click(function(){
                  $(this).attr('href',  $(this).data('stat_url'));
            });

            $(this).mouseover(function(){
                  $(this).attr('href',  $(this).data('url'));
            });
        }
    }
  });
}

function encode_utf8( s )
{
  return unescape( encodeURIComponent( s ) );
}

function decode_utf8( s )
{
  return decodeURIComponent( escape( s ) );
}