$(document).ready(function() {
  function filterPath(string) {
  return string
 .replace(/^\//,'')
 .replace(/(index|default).[a-zA-Z]{3,4}$/,'')
 .replace(/\/$/,'');
  }
  var locationPath = filterPath(location.pathname);
  $('a[href*=#]').each(function() {
 var thisPath = filterPath(this.pathname) || locationPath;
 if (  locationPath == thisPath
 && (location.hostname == this.hostname || !this.hostname)
 && this.hash.replace(/#/,'') ) {
   var $target = $(this.hash), target = this.hash;
   if (target) {
  var targetOffset = $target.offset().top;
  $(this).click(function(event) {
    event.preventDefault();
    $('html, body').animate({scrollTop: targetOffset}, 400, function() {
   location.hash = target;
    });
  });
   }
 }
  });
});