diff --git a/eustia/get.js b/eustia/get.js
new file mode 100644
index 0000000..248175d
--- /dev/null
+++ b/eustia/get.js
@@ -0,0 +1,19 @@
+function exports(url, cb)
+{
+    var xhr = new window.XMLHttpRequest();
+
+    xhr.onload = function ()
+    {
+        var status = xhr.status;
+
+        if ((status >= 200 && status < 300) || status === 304)
+        {
+            cb(null, xhr.responseText);
+        }
+    };
+
+    xhr.onerror = function () { cb(xhr) };
+
+    xhr.open('GET', url);
+    xhr.send();
+}
\ No newline at end of file
diff --git a/src/Console/Console.es6 b/src/Console/Console.es6
index cb3505d..88f0620 100644
--- a/src/Console/Console.es6
+++ b/src/Console/Console.es6
@@ -24,11 +24,12 @@ export default class Console extends Tool
     overrideConsole()
     {
         var log = this._log,
+            origConsole = {},
             winConsole = window.console;
 
         function override(name)
         {
-            var origin = winConsole[name];
+            var origin = origConsole[name] = winConsole[name];
 
             winConsole[name] = function ()
             {
@@ -38,9 +39,9 @@ export default class Console extends Tool
             };
         }
 
-        var methods = ['log', 'error', 'info', 'warn', 'dir', 'time', 'timeEnd', 'clear'];
+        CONSOLE_METHOD.forEach((name) => override(name));
 
-        methods.forEach((name) => override(name));
+        this._origConsole = origConsole;
 
         return this;
     }
@@ -61,7 +62,15 @@ export default class Console extends Tool
     {
         super.destroy();
 
-        window.onerror = this._origOnerror;
+        var origOnerror = this._origOnerror;
+        if (origOnerror) window.onerror = origOnerror;
+
+        var origConsole = this._origConsole;
+        if (origConsole)
+        {
+            var winConsole = window.console;
+            CONSOLE_METHOD.forEach((name) => winConsole[name] = origConsole[name]);
+        }
     }
     _appendTpl()
     {
@@ -150,3 +159,5 @@ export default class Console extends Tool
     }
 }
 
+const CONSOLE_METHOD = ['log', 'error', 'info', 'warn', 'dir', 'time', 'timeEnd', 'clear'];
+
diff --git a/src/DevTools/DevTools.es6 b/src/DevTools/DevTools.es6
index 9b9c7a2..bc456b9 100644
--- a/src/DevTools/DevTools.es6
+++ b/src/DevTools/DevTools.es6
@@ -10,10 +10,12 @@ function activeEruda(flag)
     window.localStorage.setItem('active-eruda', flag);
 }
 
-export default class DevTools
+export default class DevTools extends util.Emitter
 {
     constructor($parent)
     {
+        super();
+
         this._$parent = $parent;
         this._isShow = false;
         this._opacity = 1;
@@ -53,7 +55,7 @@ export default class DevTools
         var name = tool.name;
 
         this._$tools.append('<div class="eruda-' + name + ' eruda-tool"></div>');
-        tool.init(this._$tools.find('.eruda-' + name));
+        tool.init(this._$tools.find('.eruda-' + name), this);
         tool.active = false;
         this._tools[name] = tool;
 
@@ -96,8 +98,12 @@ export default class DevTools
         var tool = tools[name];
         if (!tool) return;
 
+        var lastTool = {};
+
         util.each(tools, (tool) =>
         {
+            if (tool.active) lastTool = tool;
+
             tool.active = false;
             tool.hide();
         });
@@ -107,6 +113,8 @@ export default class DevTools
 
         this._navBar.activeTool(name);
 
+        this.emit('showTool', name, lastTool);
+
         return this;
     }
     _initConfig()
diff --git a/src/Resources/Resources.es6 b/src/Resources/Resources.es6
index 42dabd4..ea1a134 100644
--- a/src/Resources/Resources.es6
+++ b/src/Resources/Resources.es6
@@ -3,26 +3,6 @@ import util from '../lib/util'
 
 require('./Resources.scss');
 
-function getState(type, len)
-{
-    if (type === 'localStore' || len === 0) return '';
-
-    var warn = 0, danger = 0;
-
-    switch (type)
-    {
-        case 'cookie': warn = 30; danger = 60; break;
-        case 'script': warn = 5; danger = 10; break;
-        case 'stylesheet': warn = 4; danger = 8; break;
-        case 'image': warn = 50; danger = 100; break;
-    }
-
-    if (len >= danger) return 'eruda-danger';
-    if (len >= warn) return 'eruda-warn';
-
-    return 'eruda-ok';
-}
-
 export default class Resources extends Tool
 {
     constructor()
@@ -36,10 +16,12 @@ export default class Resources extends Tool
         this._imageData = [];
         this._tpl = require('./Resources.hbs');
     }
-    init($el)
+    init($el, parent)
     {
         super.init($el);
 
+        this._parent = parent;
+
         this.refresh();
         this._bindEvent();
     }
@@ -155,6 +137,8 @@ export default class Resources extends Tool
     {
         var self = this;
 
+        var parent = this._parent;
+
         this._$el.on('click', '.refresh-local-storage', () =>
         {
             this.refreshLocalStorage()._render();
@@ -179,9 +163,37 @@ export default class Resources extends Tool
 
             util.cookie.remove(key);
             self.refreshCookie()._render();
-        });
+        }).on('click', '.css-link', linkFactory('css'))
+          .on('click', '.js-link', linkFactory('js'));
 
         util.orientation.on('change', () => this._render());
+
+        function linkFactory(type)
+        {
+            return function (e)
+            {
+                var url = util.$(this).attr('href');
+
+                if (!isCrossOrig(url))
+                {
+                    e.preventDefault();
+
+                    return util.get(url, (err, data) =>
+                    {
+                        if (err) return;
+
+                        var sources = parent.get('sources');
+
+                        sources.set({
+                            type: type,
+                            val: data
+                        });
+
+                        parent.showTool('sources');
+                    });
+                }
+            };
+        }
     }
     _render()
     {
@@ -213,4 +225,31 @@ export default class Resources extends Tool
             $li.css({height: $li.get(0).offsetWidth});
         }, 150);
     }
+}
+
+function getState(type, len)
+{
+    if (type === 'localStore' || len === 0) return '';
+
+    var warn = 0, danger = 0;
+
+    switch (type)
+    {
+        case 'cookie': warn = 30; danger = 60; break;
+        case 'script': warn = 5; danger = 10; break;
+        case 'stylesheet': warn = 4; danger = 8; break;
+        case 'image': warn = 50; danger = 100; break;
+    }
+
+    if (len >= danger) return 'eruda-danger';
+    if (len >= warn) return 'eruda-warn';
+
+    return 'eruda-ok';
+}
+
+var origin = window.location.origin;
+
+function isCrossOrig(url)
+{
+    return !util.startWith(url, origin);
 }
\ No newline at end of file
diff --git a/src/Resources/Resources.hbs b/src/Resources/Resources.hbs
index a819bc8..cae311f 100644
--- a/src/Resources/Resources.hbs
+++ b/src/Resources/Resources.hbs
@@ -63,7 +63,7 @@
         {{#if scriptData}}
             {{#each scriptData}}
                 <li>
-                    <a href="{{this}}" target="_blank">{{this}}</a>
+                    <a href="{{this}}" target="_blank" class="js-link">{{this}}</a>
                 </li>
             {{/each}}
         {{else}}
@@ -82,7 +82,7 @@
         {{#if stylesheetData}}
             {{#each stylesheetData}}
                 <li>
-                    <a href="{{this}}" target="_blank">{{this}}</a>
+                    <a href="{{this}}" target="_blank" class="css-link">{{this}}</a>
                 </li>
             {{/each}}
         {{else}}
diff --git a/src/Sources/Sources.es6 b/src/Sources/Sources.es6
index 3de2482..2a1fb50 100644
--- a/src/Sources/Sources.es6
+++ b/src/Sources/Sources.es6
@@ -15,9 +15,12 @@ export default class Sources extends Tool
 
         this._loadTpl();
     }
-    init($el)
+    init($el, parent)
     {
         super.init($el);
+
+        this._parent = parent;
+        this._bindEvent();
     }
     set(data)
     {
@@ -42,7 +45,7 @@ export default class Sources extends Tool
 
             return this._render();
         }
-        get(location.href, (err, data) =>
+        util.get(location.href, (err, data) =>
         {
             if (err) return;
 
@@ -50,6 +53,13 @@ export default class Sources extends Tool
             this._reset();
         });
     }
+    _bindEvent()
+    {
+        this._parent.on('showTool', (name, lastTool) =>
+        {
+            if (name !== this.name && lastTool.name === this.name) this._reset();
+        });
+    }
     _loadTpl()
     {
         this._codeTpl = require('./code.hbs');
@@ -72,43 +82,27 @@ export default class Sources extends Tool
     {
         var data = this._data;
 
-        var code = '';
+        var code = data.val;
 
-        switch (data.type)
+        // If source code too big, don't process it.
+        if (data.val.length < 100000)
         {
-            case 'html':
-                code = beautify.html(data.val);
-                break;
-            case 'css':
-                code = beautify.css(data.val);
-                break;
-            case 'js':
-                code = beautify(data.val);
-                break;
-        }
+            switch (data.type)
+            {
+                case 'html':
+                    code = beautify.html(code);
+                    break;
+                case 'css':
+                    code = beautify.css(code);
+                    break;
+                case 'js':
+                    code = beautify(code);
+                    break;
+            }
 
-        code = highlight(code, data.type);
+            code = highlight(code, data.type);
+        }
 
         this._$el.html(this._codeTpl({code: code}));
     }
-}
-
-function get(url, cb)
-{
-    var xhr = new window.XMLHttpRequest();
-
-    xhr.onload = function ()
-    {
-        var status = xhr.status;
-
-        if ((status >= 200 && status < 300) || status === 304)
-        {
-            cb(null, xhr.responseText);
-        }
-    };
-
-    xhr.onerror = function () { cb(xhr) };
-
-    xhr.open('GET', url);
-    xhr.send();
 }
\ No newline at end of file
diff --git a/src/Sources/Sources.scss b/src/Sources/Sources.scss
index 160b1e7..08157b8 100644
--- a/src/Sources/Sources.scss
+++ b/src/Sources/Sources.scss
@@ -2,9 +2,11 @@
 
 .dev-tools { .tools {
     .sources {
+        overflow-y: auto;
+        -webkit-overflow-scrolling: touch;
         .code {
             padding: $common-padding;
-            overflow-x: scroll;
+            overflow-x: auto;
             min-height: 100%;
         }
     }
diff --git a/src/lib/util.js b/src/lib/util.js
index 684a363..f73c7ae 100644
--- a/src/lib/util.js
+++ b/src/lib/util.js
@@ -457,6 +457,33 @@ module.exports = (function ()
         return exports;
     })({});
 
+    /* ------------------------------ get ------------------------------ */
+
+    var get = _.get = (function (exports)
+    {
+        function exports(url, cb)
+        {
+            var xhr = new window.XMLHttpRequest();
+
+            xhr.onload = function ()
+            {
+                var status = xhr.status;
+
+                if ((status >= 200 && status < 300) || status === 304)
+                {
+                    cb(null, xhr.responseText);
+                }
+            };
+
+            xhr.onerror = function () { cb(xhr) };
+
+            xhr.open('GET', url);
+            xhr.send();
+        }
+
+        return exports;
+    })({});
+
     /* ------------------------------ identity ------------------------------ */
 
     var identity = _.identity = (function (exports)