diff --git a/.gitignore b/.gitignore
index 02e889d..b07d427 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,9 @@
 # build folder
 build/
+
+# system
+Thumbs.db
+
 resource/windows/php
 resource/windows/webdriver
 src/php
diff --git a/src/Application.php b/src/Application.php
index 5de980f..826a917 100644
--- a/src/Application.php
+++ b/src/Application.php
@@ -23,6 +23,11 @@ class Application {
      */
     private $logger = null;
     
+    /**
+     * @var array
+     */
+    public $config = [];
+    
     /**
      * @return self
      */
@@ -108,7 +113,8 @@ public function getTaseCase() {
     /**
      * @return void
      */
-    public function start() {
+    public function start( $config = []) {
+        $this->config = $config;
         $params = $this->cliParseParams();
         $this->docroot = $params['doc-root'];
         $this->runTests($params['path'], $params);
diff --git a/src/conf.ini b/src/conf.ini
new file mode 100644
index 0000000..2681b46
--- /dev/null
+++ b/src/conf.ini
@@ -0,0 +1,2 @@
+[Browsers]
+ChromePath = "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"
\ No newline at end of file
diff --git a/src/index.php b/src/index.php
index ffd5d48..b291cd3 100644
--- a/src/index.php
+++ b/src/index.php
@@ -1,4 +1,5 @@
 <?php
 require 'vendor/autoload.php';
 require 'Application.php';
-Application::app()->start();
\ No newline at end of file
+$conf = parse_ini_file(__DIR__.'/conf.ini', true);
+Application::app()->start($conf);
\ No newline at end of file
diff --git a/src/operators/OperatorBrowser.php b/src/operators/OperatorBrowser.php
index 6b4ab60..6d5a670 100644
--- a/src/operators/OperatorBrowser.php
+++ b/src/operators/OperatorBrowser.php
@@ -11,6 +11,9 @@
 use Facebook\WebDriver\Remote\LocalFileDetector;
 use app\script\Assertion;
 use app\script\RuntimeErrorException;
+use Facebook\WebDriver\WebDriver;
+use Facebook\WebDriver\Exception\NoAlertOpenException;
+use Facebook\WebDriver\Exception\NoSuchAlertException;
 /**
  *
  */
@@ -146,11 +149,7 @@ private function startBrowserChrome() {
         $plarform = \Application::app()->getPlatformName();
         switch ( $plarform ) {
         case 'windows' :
-            $chromePath = trim(shell_exec("where chrome.exe"));
-            if ( empty($chromePath) ) {
-                throw new \Exception("unable to find chrome.exe, please make sure you have chrome.exe in your PATH.");
-            }
-            
+            $chromePath = \Application::app()->config['Browsers']['ChromePath'];
             $chromePath = str_replace('\\', '\\\\', $chromePath);
             $chromeVersion = trim(shell_exec("wmic datafile where name=\"{$chromePath}\" get Version /value"));
             $chromeVersion = explode('.', str_replace('Version=', '', $chromeVersion));
@@ -192,7 +191,7 @@ private function startBrowserChrome() {
         
         $driverPath = \Application::app()->getPath("webdriver/chromedriver-{$driverVersion}{$driverExt}");
         if ( !file_exists($driverPath) ) {
-            throw new \Exception("not supported browser type `{$this->browserName}-v{$this->version}`");
+            throw new \Exception("not supported browser type `{$this->browserName}-v{$chromeVersion}`");
         }
         
         $port = $this->findAnAvailablePort();
@@ -557,7 +556,18 @@ public function cmdWaitElemText( $selector, $text, $timeout=null ) {
      */
     public function cmdWaitAlertPresent( $timeout=null ) {
         $wait = new WebDriverWait($this->driver, $timeout);
-        $wait->until(WebDriverExpectedCondition::alertIsPresent());
+        $wait->until(function( WebDriver $driver ) {
+            try {
+                $alert = $driver->switchTo()->alert();
+                $alert->getText();
+                
+                return $alert;
+            } catch (NoAlertOpenException $e) {
+                return null;
+            } catch (NoSuchAlertException $e ) {
+                return null;
+            }
+        });
     }
     
     /**
diff --git a/src/script/commands/BaseCommand.php b/src/script/commands/BaseCommand.php
index 19b43bf..c0222fe 100644
--- a/src/script/commands/BaseCommand.php
+++ b/src/script/commands/BaseCommand.php
@@ -141,9 +141,9 @@ protected function getRuntime() {
      */
     public function exec() {
         $this->testcase->tick($this);
+        \Application::app()->log("> {$this->getRawCommand()}");
         try {
             $this->run();
-            \Application::app()->log("> {$this->getRawCommand()}");
         } catch ( \Exception $e ) {
             $this->testcase->failed($this, $e);
         }
diff --git a/src/script/commands/CommandLog.php b/src/script/commands/CommandLog.php
index 315efdb..18dff9f 100644
--- a/src/script/commands/CommandLog.php
+++ b/src/script/commands/CommandLog.php
@@ -19,6 +19,8 @@ public function setCmdArgs($args) {
      * @see \app\script\commands\BaseCommand::run()
      */
     protected function run() {
-        \Application::app()->log(implode('', $this->params));
+        $message = implode(' ', $this->params);
+        \Application::app()->log($message);
+        echo $message;
     }
 }
\ No newline at end of file