$(document).ready(function() {
  function filterPath(string) {
  	return string .replace(/^\//,'') .replace(/(index|default).[a-zA-Z]{3,4}$/,'') .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}, 3000, function() {
			   		location.hash = target;
    			});
  			});
   		}
 	}
  });
});