Jquery - Smooth Scrolling Anchor Links - Using jQuery No Conflict

<script>
//Smooth Scrolling Anchor Links
var j = jQuery.noConflict();
j(function() {
    // Select all links with hashes
    j('a[href*="#"]')
      // Remove links that don't actually link to anything
      .not('[href="#"]')
      .not('[href="#0"]')
      .click(function(event) {
        // On-page links
        if (
          location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') 
          && 
          location.hostname == this.hostname
        ) {
          // Figure out element to scroll to
          var target = j(this.hash);
          target = target.length ? target : j('[name=' + this.hash.slice(1) + ']');
          // Does a scroll target exist?
          if (target.length) {
            // Only prevent default if animation is actually gonna happen
            event.preventDefault();
            j('html, body').animate({
              scrollTop: target.offset().top-100
            }, 1000, function() {
              // Callback after animation
              // Must change focus!
              var jtarget = j(target);
              jtarget.focus();
              if (jtarget.is(":focus")) { // Checking if the target was focused
                return false;
              } else {
                jtarget.attr('tabindex','-1'); // Adding tabindex for elements not focusable
                jtarget.focus(); // Set focus again
              };
            });
          }
        }
      });
});

</script>