diff --git a/git.php b/git.php
new file mode 100644
index 0000000..5775bb6
--- /dev/null
+++ b/git.php
@@ -0,0 +1,4 @@
+<?php
+    exec("git pull",$output);
+    print_r($output);
+?>
diff --git a/index.php b/index.php
index cd63c60..98c09c6 100644
--- a/index.php
+++ b/index.php
@@ -6,7 +6,8 @@
 date_default_timezone_set('PRC');
 $smarty = new Algo();
 
-$week=$_SESSION['week'];
+//$week=$_SESSION['week'];
+$week=getWeek();
 $team=$_SESSION['team'];
 if(isset($_GET['current_week'])){
 	$current_week=$_GET['current_week'];
diff --git a/upload.php b/upload.php
index ae57eb2..bb8bc2e 100644
--- a/upload.php
+++ b/upload.php
@@ -27,11 +27,23 @@
 		$uid=1024;//add google user
 	}
 	
+	if($upload=='update'){
+		$userID = $_SESSION['userid'];
+	}else if($upload=='insert'){
+		if($uid!=1024){
+			$tmpResult=get_UserByUid($uid);
+		}else{
+			$tmpResult=get_UserByEmail($email);
+		}
+		if($tmpResult!=null && count($tmpResult)>0){
+			echo 'Exist user. Please login directly.';
+			exit;
+		}
+	}
 	
 	if($upload=='insert')
 		$userID = add_User($uid, $name, $sex, $nickname, $pojusername, $email, $group);
 	else if($upload=='update'){
-		$userID = $_SESSION['userid'];
 		update_User($userID, $name, $sex, $nickname, $pojusername, $email, $group);
 	}
 		
diff --git a/user_profile.php b/user_profile.php
index 10a8023..64c5ddc 100644
--- a/user_profile.php
+++ b/user_profile.php
@@ -38,6 +38,7 @@
 				$email='';
 			$pojname='';
 			$team='';
+
 		}
 	?>
 	<form method="post" action="upload.php" enctype="multipart/form-data">
@@ -73,8 +74,7 @@
 			</tr>
 			<tr>
 				<td>Email</td>
-				<td><input TYPE="text" name="email" value="<?php echo $email;?>
-					"/></td>
+				<td><input TYPE="text" name="email" value="<?php echo $email;?>"/></td>
 			</tr>
 			<tr>
 				<td>POJ username</td>