Smooth scrolling to anchors using jQuery

anchorScrolling.js

$(document).ready(function() {

	$('a[href^="#"]').on('click',function (e) {
	    e.preventDefault();

		/***************
		* CONFIGURATION
		****************/

		// How fast should the transiion be?
		var transition_speed = 400; // milliseconds

		// How far before we speed up the scroll FX?
		var max_scroll_pixels = 2800; // pixels

		/***************
		* END CONFIGURATION
		****************/
	 
		var 
		target = this.hash,
		target_offset = $(target).offset().top,
		window_offset = $(document).scrollTop(),
		delta = target_offset - window_offset;
	 
		if (Math.abs(delta) > max_scroll_pixels) {
			transition_speed = 100;
		}

		$('html, body').stop().animate({
			'scrollTop': target_offset
		}, transition_speed, 'swing', function () {
			window.location.hash = target;
		});
	
	});

});