diff --git a/.gitattributes b/.gitattributes
index ebf4564..7635ed6 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
-ifm.php -diff
-build/* -diff
+ifm.php		-diff
+ifm.min.php	-diff
+build/*		-diff
diff --git a/build/ifmlib.php b/build/libifm.php
similarity index 99%
rename from build/ifmlib.php
rename to build/libifm.php
index 7b5f8e9..e3b5ae7 100644
--- a/build/ifmlib.php
+++ b/build/libifm.php
@@ -333,7 +333,8 @@ function IFM( params ) {
 	 * @param string content - content of the modal
 	 * @param object options - options for the modal
 	 */
-	this.showModal = function( content, options = {} ) {
+	this.showModal = function( content, options ) {
+		options = options || {};
 		var modal = $( document.createElement( 'div' ) )
 			.addClass( "modal fade" )
 			.attr( 'id', 'ifmmodal' )
@@ -522,7 +523,8 @@ function IFM( params ) {
 	 * @param string newdir - target directory
 	 * @param object options - options for changing the directory
 	 */
-	this.changeDirectory = function( newdir, options={} ) {
+	this.changeDirectory = function( newdir, options ) {
+		options = options || {};
 		config = { absolute: false, pushState: true };
 		jQuery.extend( config, options );
 		if( ! config.absolute ) newdir = self.pathCombine( self.currentDir, newdir );
@@ -1405,6 +1407,7 @@ function IFM( params ) {
 				break;
 			case 'h':
 			case 'ArrowLeft':
+			case 'Backspace':
 				e.preventDefault();
 				self.changeDirectory( '..' );
 				break;
@@ -1559,7 +1562,7 @@ function IFM( params ) {
 	 */
 
 	private function handleRequest() {
-		if($_REQUEST["api"] == "getRealpath") {
+		if( $_REQUEST["api"] == "getRealpath" ) {
 			if( isset( $_REQUEST["dir"] ) && $_REQUEST["dir"] != "" )
 				echo json_encode( array( "realpath" => $this->getValidDir( $_REQUEST["dir"] ) ) );
 			else
@@ -1599,7 +1602,7 @@ function IFM( params ) {
 						break;
 				}
 			} else {
-				print json_encode(array("status"=>"ERROR", "message"=>"No valid working directory"));
+				print json_encode( array( "status" => "ERROR", "message" => "No valid working directory" ) );
 			}
 		}
 		exit( 0 );
@@ -1613,7 +1616,7 @@ function IFM( params ) {
 			else
 				chdir( realpath( $this->config['root_dir'] ) );
 			$this->mode = $mode;
-			if ( isset( $_REQUEST['api'] ) || $mode == "api" ) {
+			if( isset( $_REQUEST['api'] ) || $mode == "api" ) {
 				$this->handleRequest();
 			} elseif( $mode == "standalone" ) {
 				$this->getApplication();
@@ -1642,7 +1645,7 @@ function IFM( params ) {
 				else {
 					$item = array();
 					$item["name"] = $result;
-					if( is_dir($result) ) {
+					if( is_dir( $result ) ) {
 						$item["type"] = "dir";
 						if( $result == ".." )
 							$item["icon"] = "icon icon-up-open";
@@ -2542,45 +2545,6 @@ f00bar;
 {{/items}}
 </tbody>
 
-f00bar;
-		$templates['file'] = <<<'f00bar'
-<form id="formFile">
-<div class="modal-body">
-	<fieldset>
-		<label>Filename:</label>
-		<input type="text" class="form-control" name="filename" value="{{filename}}"><br>
-		<div id="content" name="content"></div><br>
-		<button type="button" class="btn btn-default" id="editoroptions">editor options</button>
-		<div class="hide" id="editoroptions-head">options</div>
-		<div class="hide" id="editoroptions-content">
-			<input type="checkbox" id="editor-wordwrap"> word wrap</input><br>
-			<input type="checkbox" id="editor-softtabs"> use soft tabs</input>
-			<div class="input-group"><span class="input-group-addon">tabsize</span><input class="form-control" type="text" size="2" id="editor-tabsize"title="tabsize"></div>
-		</div>
-	</fieldset>
-</div>
-<div class="modal-footer">
-	<button type="button" id="buttonSave" class="btn btn-default">Save</button>
-	<button type="button" id="buttonSaveNotClose" class="btn btn-default">Save without closing</button>
-	<button type="button" id="buttonClose" class="btn btn-default">Close</button>
-</div>
-</form>
-
-f00bar;
-		$templates['createdir'] = <<<'f00bar'
-<form id="formCreateDir">
-<div class="modal-body">
-	<fieldset>
-		<label>Directoy name:</label>
-		<input class="form-control" type="text" name="dirname" value="" />
-	</fieldset>
-</div>
-<div class="modal-footer">
-	<button type="button" class="btn btn-default" id="buttonSave">Save</button>
-	<button type="button" class="btn btn-default" id="buttonCancel">Cancel</button>
-</div>
-</form>
-
 f00bar;
 		$templates['ajaxrequest'] = <<<'f00bar'
 <form id="formAjaxRequest">
diff --git a/compiler.php b/compiler.php
index 8192409..5fab978 100755
--- a/compiler.php
+++ b/compiler.php
@@ -13,7 +13,8 @@ $IFM_SRC_PHPFILES = array( "src/ifmzip.php" );
 $IFM_SRC_JS = "src/ifm.js";
 
 $IFM_BUILD_STANDALONE = "ifm.php";
-$IFM_BUILD_LIB_PHP = "build/ifmlib.php";
+$IFM_BUILD_STANDALONE_COMPRESSED = "ifm.min.php";
+$IFM_BUILD_LIB_PHP = "build/libifm.php";
 
 /**
  * Prepare main script
@@ -40,14 +41,18 @@ foreach( $IFM_SRC_PHPFILES as $file ) {
  */
 file_put_contents( $IFM_BUILD_STANDALONE, $main );
 file_put_contents( $IFM_BUILD_STANDALONE, $phpincludes, FILE_APPEND );
-file_put_contents( $IFM_BUILD_STANDALONE, array(
-	'',
-	'/**',
-	' * start IFM',
-	' */',
-	'$ifm = new IFM();',
-	'$ifm->run();'
-), FILE_APPEND );
+file_put_contents( $IFM_BUILD_STANDALONE, '
+/**
+ * start IFM
+ */
+$ifm = new IFM();
+$ifm->run();
+', FILE_APPEND );
+
+/**
+ * Build compressed standalone script
+ */
+file_put_contents( $IFM_BUILD_STANDALONE_COMPRESSED, '<?php eval( gzdecode( file_get_contents( __FILE__, false, null, 85 ) ) ); exit(0); ?>' . gzencode( file_get_contents( "ifm.php", false, null, 5 ) ) );
 
 /**
  * Build library
diff --git a/ifm.php b/ifm.php
index 639e5dc..515f0ca 100644
--- a/ifm.php
+++ b/ifm.php
@@ -333,7 +333,8 @@ function IFM( params ) {
 	 * @param string content - content of the modal
 	 * @param object options - options for the modal
 	 */
-	this.showModal = function( content, options = {} ) {
+	this.showModal = function( content, options ) {
+		options = options || {};
 		var modal = $( document.createElement( 'div' ) )
 			.addClass( "modal fade" )
 			.attr( 'id', 'ifmmodal' )
@@ -522,7 +523,8 @@ function IFM( params ) {
 	 * @param string newdir - target directory
 	 * @param object options - options for changing the directory
 	 */
-	this.changeDirectory = function( newdir, options={} ) {
+	this.changeDirectory = function( newdir, options ) {
+		options = options || {};
 		config = { absolute: false, pushState: true };
 		jQuery.extend( config, options );
 		if( ! config.absolute ) newdir = self.pathCombine( self.currentDir, newdir );
@@ -1405,6 +1407,7 @@ function IFM( params ) {
 				break;
 			case 'h':
 			case 'ArrowLeft':
+			case 'Backspace':
 				e.preventDefault();
 				self.changeDirectory( '..' );
 				break;
@@ -1559,7 +1562,7 @@ function IFM( params ) {
 	 */
 
 	private function handleRequest() {
-		if($_REQUEST["api"] == "getRealpath") {
+		if( $_REQUEST["api"] == "getRealpath" ) {
 			if( isset( $_REQUEST["dir"] ) && $_REQUEST["dir"] != "" )
 				echo json_encode( array( "realpath" => $this->getValidDir( $_REQUEST["dir"] ) ) );
 			else
@@ -1599,7 +1602,7 @@ function IFM( params ) {
 						break;
 				}
 			} else {
-				print json_encode(array("status"=>"ERROR", "message"=>"No valid working directory"));
+				print json_encode( array( "status" => "ERROR", "message" => "No valid working directory" ) );
 			}
 		}
 		exit( 0 );
@@ -1613,7 +1616,7 @@ function IFM( params ) {
 			else
 				chdir( realpath( $this->config['root_dir'] ) );
 			$this->mode = $mode;
-			if ( isset( $_REQUEST['api'] ) || $mode == "api" ) {
+			if( isset( $_REQUEST['api'] ) || $mode == "api" ) {
 				$this->handleRequest();
 			} elseif( $mode == "standalone" ) {
 				$this->getApplication();
@@ -1642,7 +1645,7 @@ function IFM( params ) {
 				else {
 					$item = array();
 					$item["name"] = $result;
-					if( is_dir($result) ) {
+					if( is_dir( $result ) ) {
 						$item["type"] = "dir";
 						if( $result == ".." )
 							$item["icon"] = "icon icon-up-open";
@@ -2542,45 +2545,6 @@ f00bar;
 {{/items}}
 </tbody>
 
-f00bar;
-		$templates['file'] = <<<'f00bar'
-<form id="formFile">
-<div class="modal-body">
-	<fieldset>
-		<label>Filename:</label>
-		<input type="text" class="form-control" name="filename" value="{{filename}}"><br>
-		<div id="content" name="content"></div><br>
-		<button type="button" class="btn btn-default" id="editoroptions">editor options</button>
-		<div class="hide" id="editoroptions-head">options</div>
-		<div class="hide" id="editoroptions-content">
-			<input type="checkbox" id="editor-wordwrap"> word wrap</input><br>
-			<input type="checkbox" id="editor-softtabs"> use soft tabs</input>
-			<div class="input-group"><span class="input-group-addon">tabsize</span><input class="form-control" type="text" size="2" id="editor-tabsize"title="tabsize"></div>
-		</div>
-	</fieldset>
-</div>
-<div class="modal-footer">
-	<button type="button" id="buttonSave" class="btn btn-default">Save</button>
-	<button type="button" id="buttonSaveNotClose" class="btn btn-default">Save without closing</button>
-	<button type="button" id="buttonClose" class="btn btn-default">Close</button>
-</div>
-</form>
-
-f00bar;
-		$templates['createdir'] = <<<'f00bar'
-<form id="formCreateDir">
-<div class="modal-body">
-	<fieldset>
-		<label>Directoy name:</label>
-		<input class="form-control" type="text" name="dirname" value="" />
-	</fieldset>
-</div>
-<div class="modal-footer">
-	<button type="button" class="btn btn-default" id="buttonSave">Save</button>
-	<button type="button" class="btn btn-default" id="buttonCancel">Cancel</button>
-</div>
-</form>
-
 f00bar;
 		$templates['ajaxrequest'] = <<<'f00bar'
 <form id="formAjaxRequest">
@@ -2834,4 +2798,9 @@ class IFMZip {
 		}
 	}
 }
-/** * start IFM */$ifm = new IFM();$ifm->run();
\ No newline at end of file
+
+/**
+ * start IFM
+ */
+$ifm = new IFM();
+$ifm->run();
diff --git a/src/ifm.js b/src/ifm.js
index bc7b632..aecc854 100644
--- a/src/ifm.js
+++ b/src/ifm.js
@@ -21,7 +21,8 @@ function IFM( params ) {
 	 * @param string content - content of the modal
 	 * @param object options - options for the modal
 	 */
-	this.showModal = function( content, options = {} ) {
+	this.showModal = function( content, options ) {
+		options = options || {};
 		var modal = $( document.createElement( 'div' ) )
 			.addClass( "modal fade" )
 			.attr( 'id', 'ifmmodal' )
@@ -210,7 +211,8 @@ function IFM( params ) {
 	 * @param string newdir - target directory
 	 * @param object options - options for changing the directory
 	 */
-	this.changeDirectory = function( newdir, options={} ) {
+	this.changeDirectory = function( newdir, options ) {
+		options = options || {};
 		config = { absolute: false, pushState: true };
 		jQuery.extend( config, options );
 		if( ! config.absolute ) newdir = self.pathCombine( self.currentDir, newdir );
@@ -1093,6 +1095,7 @@ function IFM( params ) {
 				break;
 			case 'h':
 			case 'ArrowLeft':
+			case 'Backspace':
 				e.preventDefault();
 				self.changeDirectory( '..' );
 				break;
diff --git a/src/main.php b/src/main.php
index a22d12d..98a67bc 100644
--- a/src/main.php
+++ b/src/main.php
@@ -115,7 +115,7 @@ class IFM {
 	 */
 
 	private function handleRequest() {
-		if($_REQUEST["api"] == "getRealpath") {
+		if( $_REQUEST["api"] == "getRealpath" ) {
 			if( isset( $_REQUEST["dir"] ) && $_REQUEST["dir"] != "" )
 				echo json_encode( array( "realpath" => $this->getValidDir( $_REQUEST["dir"] ) ) );
 			else
@@ -155,7 +155,7 @@ class IFM {
 						break;
 				}
 			} else {
-				print json_encode(array("status"=>"ERROR", "message"=>"No valid working directory"));
+				print json_encode( array( "status" => "ERROR", "message" => "No valid working directory" ) );
 			}
 		}
 		exit( 0 );
@@ -169,7 +169,7 @@ class IFM {
 			else
 				chdir( realpath( $this->config['root_dir'] ) );
 			$this->mode = $mode;
-			if ( isset( $_REQUEST['api'] ) || $mode == "api" ) {
+			if( isset( $_REQUEST['api'] ) || $mode == "api" ) {
 				$this->handleRequest();
 			} elseif( $mode == "standalone" ) {
 				$this->getApplication();
@@ -198,7 +198,7 @@ class IFM {
 				else {
 					$item = array();
 					$item["name"] = $result;
-					if( is_dir($result) ) {
+					if( is_dir( $result ) ) {
 						$item["type"] = "dir";
 						if( $result == ".." )
 							$item["icon"] = "icon icon-up-open";
@@ -964,12 +964,6 @@ class IFM {
 f00bar;
 		$templates['filetable'] = <<<'f00bar'
 @@@src/templates/filetable.html@@@
-f00bar;
-		$templates['file'] = <<<'f00bar'
-@@@src/templates/modal.file.html@@@
-f00bar;
-		$templates['createdir'] = <<<'f00bar'
-@@@src/templates/modal.createdir.html@@@
 f00bar;
 		$templates['ajaxrequest'] = <<<'f00bar'
 @@@src/templates/modal.ajaxrequest.html@@@