$(document).ready(function() {
        function filterPath(string) {
          return string
            .replace(/^\//,'')
            .replace(/(index|default).[a-zA-Z]{3,4}$/,'')
            .replace(/\/$/,'');
        }
        $('a[href^=#]').each(function() {
          if ( filterPath(location.pathname) == filterPath(this.pathname)
          && location.hostname == this.hostname
          && this.hash.replace(/#/,'') ) {
            var $targetId = $(this.hash), $targetAnchor = $('[name=' + this.hash.slice(1) +']');
            var $target = $targetId.length ? $targetId : $targetAnchor.length ? $targetAnchor : false;
             if ($target) {
               var targetOffset = $target.offset().top;
               $(this).click(function() {
                 $('html, body').animate({scrollTop: targetOffset}, 400);
                 return false;
               });
            }
          }
        });
      });