jQuery.fn.alternateRowColors = function() {
  $('tbody tr:odd', this)
    .removeClass('even').addClass('odd');
  $('tbody tr:even', this)
    .removeClass('odd').addClass('even');
  return this;
};

$(document).ready(function() {
  $('table.sortable').each(function() {
    var $table = $(this);
    $table.alternateRowColors();
    $('th', $table).each(function(column) {
      var $header = $(this);
      var findSortKey;
      if ($header.is('.sort-alpha')) {
        findSortKey = function($cell) {
          return $cell.find('.sort-key').text().toUpperCase()
            + ' ' + $cell.text().toUpperCase();
        };
      }
      else if ($header.is('.sort-numeric')) {
        findSortKey = function($cell) {
          var key = $cell.text().replace(' руб', '');
          key = parseFloat(key);
          return isNaN(key) ? 0 : key;
        };
      }
      else if ($header.is('.sort-date')) {
        findSortKey = function($cell) {
          return Date.parse('1 ' + $cell.text());
        };
      }
          
      if (findSortKey) {
        $header.addClass('clickable').hover(function() {
          $header.addClass('hover');
        }, function() {
          $header.removeClass('hover');
        }).click(function() {
          var sortDirection = 1;
          if ($header.is('.sorted-asc')) {
            sortDirection = -1;
          }
          var rows = $table.find('tbody > tr').get();
          $.each(rows, function(index, row) {
            var $cell = $(row).children('td').eq(column);
            row.sortKey = findSortKey($cell);
          });
          rows.sort(function(a, b) {
            if (a.sortKey < b.sortKey) return -sortDirection;
            if (a.sortKey > b.sortKey) return sortDirection;
            return 0;
          });
          $.each(rows, function(index, row) {
            $table.children('tbody').append(row);
            row.sortKey = null;
          });
          $table.find('th').removeClass('sorted-asc')
            .removeClass('sorted-desc');
          if (sortDirection == 1) {
            $header.addClass('sorted-asc');
          }
          else {
            $header.addClass('sorted-desc');
          }
          $table.find('td').removeClass('sorted')
            .filter(':nth-child(' + (column + 1) + ')')
            .addClass('sorted');
          $table.alternateRowColors();
          $table.trigger('repaginate');
        });
      }
    });
  });
});

$(document).ready(function() {
  $('table.paginated').each(function() {
    var currentPage = 0;
    var numPerPage = 10;
    var $table = $(this);
    $table.bind('repaginate', function() {
      $table.find('tbody tr').hide()
        .slice(currentPage * numPerPage,
          (currentPage + 1) * numPerPage)
        .show();
    });
    var numRows = $table.find('tbody tr').length;
    var numPages = Math.ceil(numRows / numPerPage);
    var $pager = $('<div class="pager"></div>');
    for (var page = 0; page < numPages; page++) {
      $('<span class="page-number"></span>').text(page + 1)
        .bind('click', {newPage: page}, function(event) {
          currentPage = event.data['newPage'];
          $table.trigger('repaginate');
          $(this).addClass('active')
            .siblings().removeClass('active');
        }).appendTo($pager).addClass('clickable');
    }
    $pager.insertBefore($table)
      .find('span.page-number:first').addClass('active');
  });
});