diff --git a/CHANGELOG.md b/CHANGELOG.md
index e445d16c..a6b0cf5c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,12 @@
 
+3.0.5 / 2017-02-21
+==================
+
+  * feat(pwa): add sw.js
+  * fix(layout.css): loading style
+  * fix(event): highlight sidebar when clicked, fixed #86
+  * fix(gen-tree): cache toc list, fixed #88
+
 3.0.4 / 2017-02-20
 ==================
 
diff --git a/lib/docsify.js b/lib/docsify.js
index c75429e4..9597d929 100644
--- a/lib/docsify.js
+++ b/lib/docsify.js
@@ -407,14 +407,12 @@ function btn (el) {
   el = getNode(el);
   on(el, 'click', toggle);
 
-  if (isMobile) {
-    var sidebar = getNode('.sidebar');
+  var sidebar = getNode('.sidebar');
 
-    on(sidebar, 'click', function () {
-      toggle();
-      setTimeout(function () { return getAndActive(sidebar, true, true); }, 0);
-    });
-  }
+  on(sidebar, 'click', function () {
+    isMobile && toggle();
+    setTimeout(function () { return getAndActive(sidebar, true, true); }, 0);
+  });
 }
 
 function sticky () {
@@ -598,7 +596,6 @@ var progressbar = function (ref) {
 };
 
 var cache = {};
-var RUN_VERSION = Date.now();
 
 /**
  * Simple ajax get
@@ -614,8 +611,6 @@ function get (url, hasBar) {
     xhr.addEventListener.apply(xhr, arguments);
   };
 
-  url += (/\?(\w+)=/g.test(url) ? '&' : '?') + "v=" + RUN_VERSION;
-
   if (cache[url]) {
     return { then: function (cb) { return cb(cache[url]); }, abort: noop }
   }
@@ -2893,8 +2888,7 @@ function genTree (toc, maxLevel) {
 
     if (level > maxLevel) { return }
     if (last[len]) {
-      last[len].children = last[len].children || [];
-      last[len].children.push(headline);
+      last[len].children = (last[len].children || []).concat(headline);
     } else {
       headlines.push(headline);
     }
@@ -2943,7 +2937,7 @@ var markdownCompiler = marked;
 var contentBase = '';
 var currentPath = '';
 var renderer = new marked.Renderer();
-var TOC = {};
+var cacheTree = {};
 var toc = [];
 
 /**
@@ -3056,11 +3050,9 @@ function sidebar (text, level) {
 function subSidebar (el, level) {
   if (el) {
     toc[0] && toc[0].level === 1 && toc.shift();
-    var tree$$1 = genTree(TOC[currentPath] || toc, level);
+    var tree$$1 = cacheTree[currentPath] || genTree(toc, level);
     el.parentNode.innerHTML += tree(tree$$1, '<ul class="app-sub-sidebar">');
-  }
-  if (toc.length) {
-    TOC[currentPath] = toc.slice();
+    cacheTree[currentPath] = tree$$1;
   }
   toc = [];
 }
diff --git a/lib/docsify.min.js b/lib/docsify.min.js
index de46f3b6..c5f43e48 100644
--- a/lib/docsify.min.js
+++ b/lib/docsify.min.js
@@ -1,2 +1,2 @@
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diff --git a/lib/plugins/search.min.js b/lib/plugins/search.min.js
index a0953a91..92c7ae17 100644
--- a/lib/plugins/search.min.js
+++ b/lib/plugins/search.min.js
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diff --git a/lib/themes/buble.css b/lib/themes/buble.css
index 1a15435c..7e5d8cb0 100644
--- a/lib/themes/buble.css
+++ b/lib/themes/buble.css
@@ -1 +1 @@
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diff --git a/lib/themes/dark.css b/lib/themes/dark.css
index 9d701be9..54a688e0 100644
--- a/lib/themes/dark.css
+++ b/lib/themes/dark.css
@@ -1 +1 @@
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diff --git a/lib/themes/pure.css b/lib/themes/pure.css
index 6de1e54b..8f8fcc17 100644
--- a/lib/themes/pure.css
+++ b/lib/themes/pure.css
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diff --git a/lib/themes/vue.css b/lib/themes/vue.css
index 477abb93..dcfaeb94 100644
--- a/lib/themes/vue.css
+++ b/lib/themes/vue.css
@@ -1 +1 @@
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