https://www.hobsons-icecream.com/struct/wp-content/themes/mrp04/js/smoothscroll.js

1/* -----------------------------------------
2
3 jquery.smoothscroll.js
4 
5------------------------------------------*/
6
7(function(jQuery) {
8	jQuery.fn.smoothScroll = function() {
9		return this.each(function() {
10			jQuery(this).click(function() {
11				if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') &&
12					location.hostname == this.hostname) {
13					var $target = jQuery(this.hash);
14					$target = $target.length && $target || $('[name="' + this.hash.slice(1) +'"]');
15					if ($target.length) {
16						var targetOffset = $target.offset().top;
17						jQuery('html,body').animate({ scrollTop: targetOffset }, 500, 'swing');
18						return false;
19					}
20				}
21			});
22		});
23	};
24})(jQuery);
25
26jQuery(function(){
27	jQuery('a[href^="#"]').smoothScroll();
28});