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<?php
/**
 * Plugin Name: Smooth Scroll
 * Plugin URI: http://
 * Description: Smooth scroll for anchor links
 * Version: 1.0.0
 * Author: 
 * Author URI: http://
 * License: GPL2
 */

add_action('wp_footer','smoothscroll');

function smoothscroll() {
print("<script>jQuery(function() {
    jQuery.easing.myEasing = function (x, t, b, c, d) {
            return (t==d) ? b+c : c * (-Math.pow(2, -12 * t/d) + 1) + b;
        }
  jQuery('a[href*=#]:not([href=#])').click(function() {
    if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
      var target = jQuery(this.hash);
      target = target.length ? target : jQuery('[name=' + this.hash.slice(1) +']');
      if (target.length) {
        jQuery('html,body').animate({
          scrollTop: target.offset().top
        }, 1000,'myEasing');
        return false;
      }
    }
  });
});</script>");

}