smooth scroll with links to other pages offset

smooth scroll.js

// Smooth Scroll

$(function() {
  $('a[href*="#"]:not([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) {
        $('html, body').animate({
          scrollTop: target.offset().top-100
        }, 1000);
        return false;
      }
    }
  });
});

// Links to other pages offset

if ( window.location.hash ) {
    var hash = window.location.hash,
        $hash = $(hash).children('div:first-of-type');

    $hash.parent().removeAttr('id');
    $hash.before('<div id="'+hash.slice(1)+'" class="hashlink"></div>');
    window.location.hash = hash;

    }

});

// CSS to links to other pages

.hashlink {
    height: 100px;
    width: 100%;
    visibility: hidden;
    position: absolute;
    top:-100px;
    left:0;
    z-index:1;
}

// Remember to add a relative positioning to parent container