1.js

$(document).ready(function() {  
  if (String(window.location).match(/#/i)) {
    matches = String(window.location).match(/#(.*)/)
    $('#contents').load(matches[1] + '.html #container #contents *');
  }

  $('ul li').find('a').each(function(i, link) {
    $(this).click(function(i, a) {
      var uri = $(this).attr('href');
      $('#contents').empty();
      $('#contents').load(uri + ' #container #contents *');

      window.location = '#' + uri.replace(/.html/, '');
      return false;
    });
  });
});