diff --git a/common.php b/common.php
index b8c41b1..9eede57 100644
--- a/common.php
+++ b/common.php
@@ -21,10 +21,6 @@
 				{
 					$zip->addFile($path, basename($path));
 				}
-				else
-				{
-					echo"file does not exist";
-				}
 			}
 		}
 		$zip->close();
@@ -34,24 +30,22 @@
 		readfile($zip_name);
 
 		unlink($zip_name);
-		exit;
 	}
 
 	function savenote($title, $content)
 	{
 		global $dir;
 		$path = $dir . '/' . $title;
-		$lastchanged = filemtime($path);
+		$lastchanged = filemtime($path . '.md');
 		$previous = $_POST['lastchanged'];
 		if ((int)$lastchanged > (int)$previous)
 		{
 			$tempcontent = file_get_contents($path . '.md');
 			if ($tempcontent != $content)
 			{
-				$temptitle = $title . '_' . $lastchanged;
+				$temptitle = $title . '_conflict_' . $lastchanged;
 				file_put_contents($dir . '/' . $temptitle . '.md', $tempcontent);
 				array_unshift($_SESSION['index'], $dir . '/' . $temptitle);
-				echo '<div class="grey">Conflict detected. See backup: ' . $temptitle . '</div>';
 			}
 		}
 		file_put_contents($path . '.md', $content);
@@ -74,7 +68,6 @@
 		header('Content-disposition: attachment; filename=' . basename($path));
 		header('Content-type: text/markdown');
 		readfile($path);
-		exit;
 	}
 
 	function linksdiv($content)
@@ -118,8 +111,9 @@
 		return $preview;
 	}
 
-	// Main
-	if ($password && (!isset($_SERVER['PHP_AUTH_PW']) || $_SERVER['PHP_AUTH_PW'] != $password)) {
+	// authent
+	if ($password && (!isset($_SERVER['PHP_AUTH_PW']) || $_SERVER['PHP_AUTH_PW'] != $password))
+	{
 		header('WWW-Authenticate: Basic realm="bbn"');
 		header('HTTP/1.0 401 Unauthorized');
 		echo '<p>Access denied.</p></body></html>';
diff --git a/index.php b/index.php
index 9b137ad..af615b2 100644
--- a/index.php
+++ b/index.php
@@ -4,6 +4,7 @@
 	if (isset($_GET['download']))
 	{
 		downloadall();
+		exit;
 	}
 
 	$filter = '';
diff --git a/note.php b/note.php
index da6de10..de79d5e 100644
--- a/note.php
+++ b/note.php
@@ -4,8 +4,7 @@
 	// handle save actions
 	$title = $_POST['title'];
 	$content = $_POST['content'];
-
-	if (isset($_POST['save']) || isset($_POST['home']) || isset($_POST['download']))
+	if (isset($_POST['save']) || isset($_POST['home']) || isset($_POST['download']) || isset($_POST['preview']))
 	{
 		savenote($title, $content);
 
@@ -19,12 +18,18 @@
 		if (isset($_POST['download']))
 		{
 			downloadnote($dir . '/' . $title . '.md');
+			exit;
 		}
 		else if (isset($_POST['home']))
 		{
 			header("Location: index.php");
 			exit;
 		}
+		else if (isset($_POST['preview']))
+		{
+			header("Location: note.php?preview=1&title=" . $title);
+			exit;
+		}
 		else
 		{
 			header("Location: note.php?title=" . $title);
@@ -39,11 +44,6 @@
 		header("Location: index.php");
 		exit;
 	}
-	else if (isset($_POST['preview']))
-	{
-		header("Location: note.php?preview=1&title=" . $title);
-		exit;
-	}
 
 	// main