From a40d4993ed0a947083b7e85cf7772492d613afc8 Mon Sep 17 00:00:00 2001
From: Jacob Thornton <jacobthornton@gmail.com>
Date: Tue, 24 Jan 2012 17:13:02 -0800
Subject: make subnav fix

---
 docs/assets/js/application.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'docs/assets/js/application.js')

diff --git a/docs/assets/js/application.js b/docs/assets/js/application.js
index 95caa0f31..4b7efe53f 100644
--- a/docs/assets/js/application.js
+++ b/docs/assets/js/application.js
@@ -116,6 +116,27 @@ $(function(){
     })
   })
 
+  // fix sub nav playa
+  var $win = $(window)
+    , $nav = $('.subhead .nav')
+    , navTop = $('.subhead .nav').offset().top - 40
+    , isFixed = 0
+
+  processScroll()
+
+  $win.on('scroll', processScroll)
+
+  function processScroll() {
+    var i, scrollTop = $win.scrollTop()
+    if (scrollTop >= navTop && !isFixed) {
+      isFixed = 1
+      $nav.addClass('subnav-fixed')
+    } else if (scrollTop <= navTop && isFixed) {
+      isFixed = 0
+      $nav.removeClass('subnav-fixed')
+    }
+  }
+
 })
 
 // JS for javascript demos
-- 
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