--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/assets/js/bootstrap-scrollspy.js	Wed Sep 19 22:33:03 2012 +0900
@@ -0,0 +1,151 @@
+/* =============================================================
+ * bootstrap-scrollspy.js v2.1.1
+ * http://twitter.github.com/bootstrap/javascript.html#scrollspy
+ * =============================================================
+ * Copyright 2012 Twitter, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============================================================== */
+
+
+!function ($) {
+
+  "use strict"; // jshint ;_;
+
+
+ /* SCROLLSPY CLASS DEFINITION
+  * ========================== */
+
+  function ScrollSpy(element, options) {
+    var process = $.proxy(this.process, this)
+      , $element = $(element).is('body') ? $(window) : $(element)
+      , href
+    this.options = $.extend({}, $.fn.scrollspy.defaults, options)
+    this.$scrollElement = $element.on('scroll.scroll-spy.data-api', process)
+    this.selector = (this.options.target
+      || ((href = $(element).attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) //strip for ie7
+      || '') + ' .nav li > a'
+    this.$body = $('body')
+    this.refresh()
+    this.process()
+  }
+
+  ScrollSpy.prototype = {
+
+      constructor: ScrollSpy
+
+    , refresh: function () {
+        var self = this
+          , $targets
+
+        this.offsets = $([])
+        this.targets = $([])
+
+        $targets = this.$body
+          .find(this.selector)
+          .map(function () {
+            var $el = $(this)
+              , href = $el.data('target') || $el.attr('href')
+              , $href = /^#\w/.test(href) && $(href)
+            return ( $href
+              && $href.length
+              && [[ $href.position().top, href ]] ) || null
+          })
+          .sort(function (a, b) { return a[0] - b[0] })
+          .each(function () {
+            self.offsets.push(this[0])
+            self.targets.push(this[1])
+          })
+      }
+
+    , process: function () {
+        var scrollTop = this.$scrollElement.scrollTop() + this.options.offset
+          , scrollHeight = this.$scrollElement[0].scrollHeight || this.$body[0].scrollHeight
+          , maxScroll = scrollHeight - this.$scrollElement.height()
+          , offsets = this.offsets
+          , targets = this.targets
+          , activeTarget = this.activeTarget
+          , i
+
+        if (scrollTop >= maxScroll) {
+          return activeTarget != (i = targets.last()[0])
+            && this.activate ( i )
+        }
+
+        for (i = offsets.length; i--;) {
+          activeTarget != targets[i]
+            && scrollTop >= offsets[i]
+            && (!offsets[i + 1] || scrollTop <= offsets[i + 1])
+            && this.activate( targets[i] )
+        }
+      }
+
+    , activate: function (target) {
+        var active
+          , selector
+
+        this.activeTarget = target
+
+        $(this.selector)
+          .parent('.active')
+          .removeClass('active')
+
+        selector = this.selector
+          + '[data-target="' + target + '"],'
+          + this.selector + '[href="' + target + '"]'
+
+        active = $(selector)
+          .parent('li')
+          .addClass('active')
+
+        if (active.parent('.dropdown-menu').length)  {
+          active = active.closest('li.dropdown').addClass('active')
+        }
+
+        active.trigger('activate')
+      }
+
+  }
+
+
+ /* SCROLLSPY PLUGIN DEFINITION
+  * =========================== */
+
+  $.fn.scrollspy = function (option) {
+    return this.each(function () {
+      var $this = $(this)
+        , data = $this.data('scrollspy')
+        , options = typeof option == 'object' && option
+      if (!data) $this.data('scrollspy', (data = new ScrollSpy(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  $.fn.scrollspy.Constructor = ScrollSpy
+
+  $.fn.scrollspy.defaults = {
+    offset: 10
+  }
+
+
+ /* SCROLLSPY DATA-API
+  * ================== */
+
+  $(window).on('load', function () {
+    $('[data-spy="scroll"]').each(function () {
+      var $spy = $(this)
+      $spy.scrollspy($spy.data())
+    })
+  })
+
+}(window.jQuery);
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