diff --git a/framework/yii/debug/Module.php b/framework/yii/debug/Module.php
index 6908b00..0d31bd3 100644
--- a/framework/yii/debug/Module.php
+++ b/framework/yii/debug/Module.php
@@ -9,6 +9,7 @@ namespace yii\debug;
 
 use Yii;
 use yii\base\View;
+use yii\web\HttpException;
 
 /**
  * @author Qiang Xue <qiang.xue@gmail.com>
@@ -64,17 +65,20 @@ class Module extends \yii\base\Module
 		unset(Yii::$app->getLog()->targets['debug']);
 		$this->logTarget = null;
 
-		$ip = Yii::$app->getRequest()->getUserIP();
-		foreach ($this->allowedIPs as $filter) {
-			if ($filter === '*' || $filter === $ip || (($pos = strpos($filter, '*')) !== false && !strncmp($ip, $filter, $pos))) {
-				return parent::beforeAction($action);
-			}
+		if ($this->checkAccess($action)) {
+			return true;
+		} elseif ($action->id === 'toolbar') {
+			return false;
+		} else {
+			throw new HttpException(403, 'You are not allowed to access this page.');
 		}
-		return false;
 	}
 
 	public function renderToolbar($event)
 	{
+		if (!$this->checkAccess()) {
+			return;
+		}
 		$url = Yii::$app->getUrlManager()->createUrl($this->id . '/default/toolbar', array(
 			'tag' => $this->logTarget->tag,
 		));
@@ -85,6 +89,17 @@ class Module extends \yii\base\Module
 		echo '<script>' . $view->renderPhpFile(__DIR__ . '/views/default/toolbar.js') . '</script>';
 	}
 
+	protected function checkAccess()
+	{
+		$ip = Yii::$app->getRequest()->getUserIP();
+		foreach ($this->allowedIPs as $filter) {
+			if ($filter === '*' || $filter === $ip || (($pos = strpos($filter, '*')) !== false && !strncmp($ip, $filter, $pos))) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	protected function corePanels()
 	{
 		return array(
diff --git a/framework/yii/debug/assets/main.css b/framework/yii/debug/assets/main.css
index d5eefc6..b60e180 100644
--- a/framework/yii/debug/assets/main.css
+++ b/framework/yii/debug/assets/main.css
@@ -1,4 +1,12 @@
+body {
+	padding-top: 60px;
+}
+
 #yii-debug-toolbar {
+	position: fixed;
+	top: 0;
+	left: 0;
+	right: 0;
 	margin: 0 0 20px 0;
 	padding: 0;
 	z-index: 1000000;
diff --git a/framework/yii/debug/panels/DbPanel.php b/framework/yii/debug/panels/DbPanel.php
index dae155c..3da55f0 100644
--- a/framework/yii/debug/panels/DbPanel.php
+++ b/framework/yii/debug/panels/DbPanel.php
@@ -36,9 +36,8 @@ class DbPanel extends Panel
 		$url = $this->getUrl();
 		$output = <<<EOD
 <div class="yii-debug-toolbar-block">
-	<a href="$url">
-		DB queries: <span class="label">$queryCount</span>
-		time: <span class="label">$queryTime</span>
+	<a href="$url" title="Executed $queryCount database queries which took $queryTime.">
+		DB <span class="label">$queryCount</span> <span class="label">$queryTime</span>
 	</a>
 </div>
 EOD;
diff --git a/framework/yii/debug/panels/LogPanel.php b/framework/yii/debug/panels/LogPanel.php
index 9f3bbfa..68f2f7f 100644
--- a/framework/yii/debug/panels/LogPanel.php
+++ b/framework/yii/debug/panels/LogPanel.php
@@ -44,7 +44,7 @@ class LogPanel extends Panel
 		$url = $this->getUrl();
 		return <<<EOD
 <div class="yii-debug-toolbar-block">
-	<a href="$url" title="$title">Log: $log</a>
+	<a href="$url" title="$title">Log $log</a>
 </div>
 EOD;
 	}
diff --git a/framework/yii/debug/panels/ProfilingPanel.php b/framework/yii/debug/panels/ProfilingPanel.php
index b614611..ca9d070 100644
--- a/framework/yii/debug/panels/ProfilingPanel.php
+++ b/framework/yii/debug/panels/ProfilingPanel.php
@@ -33,10 +33,10 @@ class ProfilingPanel extends Panel
 
 		return <<<EOD
 <div class="yii-debug-toolbar-block">
-	<a href="$url" title="Total processing time">Time: <span class="label">$time</span></a>
+	<a href="$url" title="Total request processing time was $time">Time <span class="label">$time</span></a>
 </div>
 <div class="yii-debug-toolbar-block">
-	<a href="$url" title="Peak memory consumption">Memory: <span class="label">$memory</span></a>
+	<a href="$url" title="Peak memory consumption">Memory <span class="label">$memory</span></a>
 </div>
 EOD;
 	}
diff --git a/framework/yii/debug/panels/RequestPanel.php b/framework/yii/debug/panels/RequestPanel.php
index e9b1750..333c01b 100644
--- a/framework/yii/debug/panels/RequestPanel.php
+++ b/framework/yii/debug/panels/RequestPanel.php
@@ -45,10 +45,10 @@ class RequestPanel extends Panel
 
 		return <<<EOD
 <div class="yii-debug-toolbar-block">
-	<a href="$url" title="Status code: $statusCode $statusText">Status: <span class="label $class">$statusCode</span></a>
+	<a href="$url" title="Status code: $statusCode $statusText">Status <span class="label $class">$statusCode</span></a>
 </div>
 <div class="yii-debug-toolbar-block">
-	<a href="$url">Action: <span class="label">{$this->data['action']}</span></a>
+	<a href="$url">Action <span class="label">{$this->data['action']}</span></a>
 </div>
 EOD;
 	}