$(document).ready(function(){
  //back to top scroll function. Any link with a hash (#) will scroll to that id on the page
    $('a[href*=#]').click(function() {
      if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')
      && location.hostname == this.hostname) {
      var $target = $(this.hash);
      $target = $target.length && $target
      || $('[name=' + this.hash.slice(1) +']');
      if ($target.length) {
      var targetOffset = $target.offset().top;
      $('html,body')
      .animate({scrollTop: targetOffset}, 500);
      return false;
     }
   }
  });
});