diff --git a/forms/admin/photos/photos.js b/forms/admin/photos/photos.js
index 0f2b7da4..a391a31d 100644
--- a/forms/admin/photos/photos.js
+++ b/forms/admin/photos/photos.js
@@ -6,38 +6,37 @@ Vn.Photos = new Class
 	,activate: function ()
 	{
 		this.$('schema').value = 'catalog';
-		this.$('photo-size').value = 10 /* MB */ * 1048576;
 		this.$('photo-id').focus ();
-		this.$('html-form').action =
-			'//'+ Vn.Config['image_host'] +'/rest.php?action=image';
+		
+		var self = this;
+		this.$('html-form').onsubmit = function ()
+			{ self.onSubmit (); return false; };
 	}
-
-	,onFormSubmit: function ()
+	
+	,onSubmit: function ()
 	{
 		this.$('schema-field').value = this.$('schema').value;
 		this.$('submit').disabled = true;
 		this.gui.loaderPush ();
-	}
 
-	,onImageUpload: function ()
-	{	
+		var request = new Vn.JsonRequest ();
+		request.sendFormMultipart (this.$('html-form'),
+			this.onResponse.bind (this));
+	}
+	
+	,onResponse: function (request, json, error)
+	{
 		this.gui.loaderPop ();
 		this.$('submit').disabled = false;
 
-		try {
-			var responseText = this.$('iframe').contentDocument.body.textContent;
-			var response = eval ('('+ responseText +')');
-
-			if (response.data)
-			{
-				this.$('photo-id').value = '';
-				this.$('photo-id').focus ();
-				Htk.Toast.showMessage (_('ImageUploaded'));
-			}
-			else
-				Htk.Toast.showError (response.error.message +' ('+ response.error.code +')');
+		if (json)
+		{
+			this.$('photo-id').value = '';
+			this.$('photo-id').focus ();
+			Htk.Toast.showMessage (_('ImageAdded'));
 		}
-		catch (e) {}
+		else
+			Htk.Toast.showError (error.message);
 	}
 });
 
diff --git a/forms/admin/photos/style.css b/forms/admin/photos/style.css
index c25d6923..59dedb12 100644
--- a/forms/admin/photos/style.css
+++ b/forms/admin/photos/style.css
@@ -20,11 +20,12 @@
 
 /* Footer */
 
-.photos button
+.photos input[type=submit]
 {
 	display: block;
 	margin: 0 auto;
 	padding: 0.6em;
 	margin-top: 1.5em;
+	font-size: 1.2em;
 }
 
diff --git a/forms/admin/photos/ui.xml b/forms/admin/photos/ui.xml
index 1b074152..23d9d94c 100755
--- a/forms/admin/photos/ui.xml
+++ b/forms/admin/photos/ui.xml
@@ -7,10 +7,8 @@
 		<div class="form">
 			<form
 				id="html-form"
-				method="post"
-				enctype="multipart/form-data"
-				target="photos-iframe"
-				on-submit="onFormSubmit">
+				enctype="multipart/form-data">
+				<input type="hidden" name="srv" value="json:image/upload"/>
 				<div class="form-group">
 					<label><t>Id</t></label>
 					<input type="number" name="id" id="photo-id"/>
@@ -20,27 +18,22 @@
 					<input type="text" name="name"/>
 				</div>
 				<div class="form-group">
-					<label><t>Schema</t></label>
-					<input type="hidden" name="schema" id="schema-field"/>
+					<label><t>Collection</t></label>
 					<htk-combo id="schema">
 						<db-model property="model">
-							SELECT name, `desc` FROM image_schema ORDER BY `desc`
+							<custom>
+								SELECT name, `desc` FROM image_schema ORDER BY `desc`
+							</custom>
 						</db-model>
 					</htk-combo>
+					<input type="hidden" name="schema" id="schema-field"/>
 				</div>
 				<div class="form-group">
 					<label><t>ImageFile</t></label>
 					<input type="file" name="image"/>
-					<input type="hidden" name="MAX_FILE_SIZE" id="photo-size"/>
 				</div>
-				<button class="thin" id="submit">
-					<t>Upload</t>
-				</button>
+				<input id="submit" type="submit" class="thin"/>
 			</form>
-			<iframe
-				id="iframe"
-				name="photos-iframe"
-				on-load="onImageUpload"/>
 		</div>
 	</div>
 </div>
diff --git a/forms/ecomerce/invoices/invoices.js b/forms/ecomerce/invoices/invoices.js
index 959821e6..78c07a2c 100644
--- a/forms/ecomerce/invoices/invoices.js
+++ b/forms/ecomerce/invoices/invoices.js
@@ -8,7 +8,12 @@ Vn.Invoices = new Class
 		if (!invoiceId)
 			return;
 			
-		var url = 'rest.php?method=dms/invoice&invoice='+ invoiceId;
+		var params = {
+			'srv': 'rest:dms/invoice',
+			'invoice': invoiceId
+		};
+			
+		var url = '?'+ Vn.Url.makeUri (params);
 		window.open (url, '_blank');
 	}
 });
diff --git a/js/htk/field/select.js b/js/htk/field/select.js
index 95c27738..6b79a86a 100644
--- a/js/htk/field/select.js
+++ b/js/htk/field/select.js
@@ -113,6 +113,7 @@ Htk.Select = new Class
 	,initialize: function (props)
 	{
 		var button = this.createElement ('button');
+		button.type = 'button';
 		button.className = 'htk-select input';
 		button.addEventListener ('mousedown', this._onButtonMouseDown.bind (this));
 
diff --git a/js/htk/image-editor.xml b/js/htk/image-editor.xml
index 37161386..01aca00e 100644
--- a/js/htk/image-editor.xml
+++ b/js/htk/image-editor.xml
@@ -18,7 +18,6 @@
 			<div class="clear"/>
 		</div>
 		<input id="schema" type="hidden" name="schema"/>
-		<input id="max-size" type="hidden" name="MAX_FILE_SIZE"/>
 	</form>
 </div>
 </vn>
diff --git a/js/vn/json-request.js b/js/vn/json-request.js
index f0967eda..856f522d 100644
--- a/js/vn/json-request.js
+++ b/js/vn/json-request.js
@@ -21,8 +21,11 @@ Vn.JsonRequest = new Class
 
 	,send: function (params, callback)
 	{
+		if (!params)
+			params = {};
+	
 		params['srv'] = 'json:'+ this._methodName;
-		this.sendWithUrl (params, callback, 'post', url);
+		this.sendWithUrl (params, callback, 'post', '.');
 	}
 	
 	,sendForm: function (form, callback)
@@ -34,16 +37,13 @@ Vn.JsonRequest = new Class
 		if (elements[i].name)
 			params[elements[i].name] = elements[i].value;
 
-		this.sendWithUrl (params, callback, form.method, form.action);
+		this.sendWithUrl (params, callback, 'post', form.action);
 	}
 	
 	,sendFormMultipart: function (form, callback)
 	{
-		var formData = new FormData (form);
-		formData.append ('service', 'Json');
-
 		var request = new XMLHttpRequest ();
-		request.open (form.method, form.action, true);
+		request.open ('post', form.action, true);
 		request.onreadystatechange =
 			this._onStateChange.bind (this, request, callback);
 		request.send (new FormData (form));
@@ -57,7 +57,32 @@ Vn.JsonRequest = new Class
 		var data = null;
 		var error = null;
 
-		try {
+		try {		
+			if (request.status == 0)
+			{
+				var ex = new Vn.JsonException ();
+				ex.message = _('The server does not respond');
+				throw ex;
+			}
+		
+			var contentType = null;
+			
+			try {
+				contentType = request
+					.getResponseHeader ('Content-Type')
+					.split (';')[0]
+					.trim ();
+			}
+			catch (e) {}
+				
+			if (contentType != 'application/json')
+			{
+				var ex = new Vn.JsonException ();
+				ex.message = request.statusText;
+				ex.code = request.status;
+				throw ex;
+			}
+		
 			var json = JSON.parse (request.responseText);
 			var jsData = json.data;
 			var jsWarns = json.warnings;
diff --git a/locale/ca/forms/admin/photos.json b/locale/ca/forms/admin/photos.json
index b7ac94c9..33d37b50 100755
--- a/locale/ca/forms/admin/photos.json
+++ b/locale/ca/forms/admin/photos.json
@@ -1,7 +1,7 @@
 {
 	 "Photos": "Fotos"
 
-	,"Schema": "Esquema"
+	,"Collection": "Colección"
 	,"ImageName": "Nom de la imatge"
 	,"Id": "Id"
 	,"ImageFile": "Arxiu d'imatge"
diff --git a/locale/en/forms/admin/photos.json b/locale/en/forms/admin/photos.json
index 39489077..402722b4 100755
--- a/locale/en/forms/admin/photos.json
+++ b/locale/en/forms/admin/photos.json
@@ -1,7 +1,7 @@
 {
 	 "Photos": "Photos"
 
-	,"Schema": "Schema"
+	,"Collection": "Collection"
 	,"ImageName": "Image name"
 	,"Id": "Id"
 	,"ImageFile": "Image file"
diff --git a/locale/es/forms/admin/photos.json b/locale/es/forms/admin/photos.json
index fa200179..65031e5f 100755
--- a/locale/es/forms/admin/photos.json
+++ b/locale/es/forms/admin/photos.json
@@ -1,7 +1,7 @@
 {
 	 "Photos": "Fotos"
 
-	,"Schema": "Esquema"
+	,"Collection": "Colección"
 	,"ImageName": "Nombre de la imagen"
 	,"Id": "Id"
 	,"ImageFile": "Archivo de imagen"
diff --git a/locale/fr/forms/admin/photos.json b/locale/fr/forms/admin/photos.json
index cf3a0511..b6be33d7 100755
--- a/locale/fr/forms/admin/photos.json
+++ b/locale/fr/forms/admin/photos.json
@@ -1,7 +1,7 @@
 {
 	 "Photos": "Photos"
 
-	,"Schema": "Schéma"
+	,"Collection": "Collection"
 	,"ImageName": "Nom de l'image"
 	,"Id": "Id"
 	,"ImageFile": "Fichier image"
diff --git a/locale/mn/forms/admin/photos.json b/locale/mn/forms/admin/photos.json
index 39489077..f40f409e 100755
--- a/locale/mn/forms/admin/photos.json
+++ b/locale/mn/forms/admin/photos.json
@@ -1,7 +1,7 @@
 {
 	 "Photos": "Photos"
 
-	,"Schema": "Schema"
+	,"Collection": "цуглуулга"
 	,"ImageName": "Image name"
 	,"Id": "Id"
 	,"ImageFile": "Image file"
diff --git a/locale/pt/forms/admin/photos.json b/locale/pt/forms/admin/photos.json
index 8d0e1eb7..28ad4bb6 100644
--- a/locale/pt/forms/admin/photos.json
+++ b/locale/pt/forms/admin/photos.json
@@ -1,7 +1,7 @@
 {
 	 "Photos": "Fotos"
 
-	,"Schema": "Esquema"
+	,"Collection": "Coleção"
 	,"ImageName": "Nome da imagem"
 	,"Id": "Id"
 	,"ImageFile": "Arquivo de imagem"
diff --git a/rest/tpv/confirm-post.php b/rest/tpv/confirm-post.php
index 050ff9c6..7665f6a4 100644
--- a/rest/tpv/confirm-post.php
+++ b/rest/tpv/confirm-post.php
@@ -1,12 +1,12 @@
 <?php
 
-require_once ('vn/web/json-request.php');
+require_once ('vn/web/rest-request.php');
 require_once (__DIR__.'/tpv.php');
 
 /**
  * Gets transaction confirmation from HTTP POST.
  **/
-class ConfirmPost extends Vn\Web\HttpRequest
+class ConfirmPost extends Vn\Web\RestRequest
 {
 	function run ()
 	{
diff --git a/pages/tpv/soap-request.xml b/rest/tpv/soap-request.xml
similarity index 100%
rename from pages/tpv/soap-request.xml
rename to rest/tpv/soap-request.xml
diff --git a/pages/tpv/soap-test.php b/rest/tpv/soap-test.php
similarity index 88%
rename from pages/tpv/soap-test.php
rename to rest/tpv/soap-test.php
index ccbd3e71..963d56cc 100644
--- a/pages/tpv/soap-test.php
+++ b/rest/tpv/soap-test.php
@@ -6,9 +6,9 @@ if (isset ($_POST['key']))
 {
 	ini_set ('soap.wsdl_cache_enabled', FALSE);
 
-	$requestString = file_get_contents ('soap-request.xml');
+	$requestString = file_get_contents (__DIR__.'/soap-request.xml');
 
-	$client = new SoapClient (stream_resolve_include_path ('vn/tpv/soap.wsdl'));
+	$client = new SoapClient (__DIR__.'/soap.wsdl');
 	$result = $client->__soapCall ('procesaNotificacionSIS', [
 		'XML' => $requestString
 	]);
diff --git a/vn/web/app.php b/vn/web/app.php
index 1fb29480..965f4385 100644
--- a/vn/web/app.php
+++ b/vn/web/app.php
@@ -12,6 +12,7 @@ require_once ('vn/lib/app.php');
  **/
 class App extends \Vn\Lib\App
 {
+	protected $conn = NULL;
 	private $allowedServices =
 	[
 		'html',
@@ -65,6 +66,137 @@ class App extends \Vn\Lib\App
 		else
 			return parent::getConfigFile ();
 	}
+	
+	/**
+	 * Tries to retrieve user credentials from many sources such as POST,
+	 * SESSION or COOKIES. If $_POST['remember'] is defined the user credentials 
+	 * are saved on the client brownser for future logins, cookies names are
+	 * 'vn_user' for the user name and 'vn_pass' for user password, the
+	 * password is encoded using base64_encode() function and should be decoded
+	 * using base64_decode().
+	 *
+	 * return Db\Conn The database connection
+	 **/
+	function login ()
+	{
+		if ($this->conn)
+			return $this->conn;
+	
+		$user = NULL;
+		$password = NULL;
+		$rememberUser = TRUE;
+		$rememberPass = FALSE;
+		$credentialsChanged = TRUE;
+		$wasLoged = isset ($_SESSION['user']);
+		
+		if (isset ($_POST['guest']))
+		{
+			$sysConn = $this->getSysConn ();
+			$row = $sysConn->getRow (
+				'SELECT guest_user, guest_pass FROM config');
+
+			if ($row)
+			{
+				$user = $row['guest_user'];
+				$password = base64_decode ($row['guest_pass']);
+				$rememberUser = FALSE;
+			}
+		}
+		elseif (isset ($_POST['user']) && isset ($_POST['password']))
+		{
+			$user = $_POST['user'];
+			$password = $_POST['password'];
+
+			if (isset ($_POST['remember']) && $_POST['remember'])
+				$rememberPass = TRUE;
+		}
+		elseif (isset ($_SESSION['user']))
+		{
+			$user = $_SESSION['user'];
+			$password = $_SESSION['password'];
+			$credentialsChanged = FALSE;
+		}
+		elseif (isset ($_COOKIE['vn_user']) && isset ($_COOKIE['vn_pass']))
+		{
+			$user = $_COOKIE['vn_user'];
+			$password = base64_decode ($_COOKIE['vn_pass']);
+			$rememberPass = TRUE;
+		}
+
+		if (!isset ($user))
+			throw new SessionExpiredException ();
+
+		try {
+			$db = $this->createConnection ($user, $password);
+			$db->query ('CALL user_session_start (#)', [session_id ()]);
+			$this->conn = $db;
+
+			if ($rememberUser)
+			{
+				$cookieLife = time () + 7 * 86400; // 7 Days
+				setcookie ('vn_user', $user, $cookieLife);
+
+				if ($rememberPass)
+					setcookie ('vn_pass',
+						base64_encode ($password), $cookieLife);
+			}
+
+			$_SESSION['user'] = $user;
+			$_SESSION['password'] = $password;
+		}
+		catch (\Exception $e)
+		{
+			$this->conn = NULL;
+			throw new BadLoginException ();
+		}
+
+		// Registering the user access
+
+		if (!$wasLoged)
+			unset ($_SESSION['visitUser']);
+
+		if (isset ($_SESSION['access'])
+		&& !isset ($_SESSION['visitUser']))
+		{
+			$sysConn = $this->getSysConn ();
+			$_SESSION['visitUser'] = $sysConn->getValue (
+				'CALL visit_user_new (#, #, #)',
+				[
+					 $_SESSION['access']
+					,nullIf ($_SESSION, 'visitUser')
+					,session_id ()
+				]
+			);
+	
+			if (!isset ($_SESSION['visitUnknown']))
+				$_SESSION['visitUnknown'] = $_SESSION['visitUser'];
+		}
+		
+		return $db;
+	}
+
+	/**
+	 * Logouts the current user. Cleans the last saved used credentials.
+	 **/
+	function logout ()
+	{
+		$_SESSION['visitUser'] = nullIf ($_SESSION, 'visitUnknown');
+		
+		setcookie ('vn_pass', '', -1);
+		unset ($_COOKIE['vn_pass']);
+		unset ($_SESSION['user']);
+		unset ($_SESSION['password']);
+		
+		if ($this->conn)
+		{
+			$this->conn->query (
+				'DELETE FROM user_session_view '
+				 .'WHERE connection_id = CONNECTION_ID()'
+			);
+			$this->conn->close ();
+			$this->conn = NULL;
+		}
+	}
 }
 
 ?>
diff --git a/vn/web/html-service.php b/vn/web/html-service.php
index 44c97972..516724c0 100644
--- a/vn/web/html-service.php
+++ b/vn/web/html-service.php
@@ -74,7 +74,7 @@ class HtmlService extends Service
 
 		// Loading the requested page
 
-		$basePath =  "./html/$page";
+		$basePath =  "pages/$page";
 
 		if (file_exists ($basePath))
 		{
diff --git a/vn/web/json-request.php b/vn/web/json-request.php
index be9a945b..3ecf4bce 100644
--- a/vn/web/json-request.php
+++ b/vn/web/json-request.php
@@ -2,7 +2,7 @@
 
 namespace Vn\Web;
 
-require_once (__DIR__.'/json-app.php');
+require_once (__DIR__.'/json-service.php');
 require_once (__DIR__.'/rest-request.php');
 
 /**
diff --git a/vn/web/rest-request.php b/vn/web/rest-request.php
index 397efddc..c679b44e 100644
--- a/vn/web/rest-request.php
+++ b/vn/web/rest-request.php
@@ -2,7 +2,7 @@
 
 namespace Vn\Web;
 
-require_once (__DIR__.'/rest-app.php');
+require_once (__DIR__.'/rest-service.php');
 
 /**
  * Base class for REST services.
diff --git a/vn/web/rest-service.php b/vn/web/rest-service.php
index fff9c33f..f768564e 100644
--- a/vn/web/rest-service.php
+++ b/vn/web/rest-service.php
@@ -25,135 +25,6 @@ class RestService extends Service
 		$method->run ();
 	}
 
-	/**
-	 * Tries to retrieve user credentials from many sources such as POST,
-	 * SESSION or COOKIES. If $_POST['remember'] is defined the user credentials 
-	 * are saved on the client brownser for future logins, cookies names are
-	 * 'vn_user' for the user name and 'vn_pass' for user password, the
-	 * password is encoded using base64_encode() function and should be decoded
-	 * using base64_decode().
-	 **/
-	function login ()
-	{
-		if ($this->conn)
-			return $this->conn;
-	
-		$user = NULL;
-		$password = NULL;
-		$rememberUser = TRUE;
-		$rememberPass = FALSE;
-		$credentialsChanged = TRUE;
-		$wasLoged = isset ($_SESSION['user']);
-		
-		if (isset ($_POST['guest']))
-		{
-			$sysConn = $this->app->getSysConn ();
-			$row = $sysConn->getRow (
-				'SELECT guest_user, guest_pass FROM config');
-
-			if ($row)
-			{
-				$user = $row['guest_user'];
-				$password = base64_decode ($row['guest_pass']);
-				$rememberUser = FALSE;
-			}
-		}
-		elseif (isset ($_POST['user']) && isset ($_POST['password']))
-		{
-			$user = $_POST['user'];
-			$password = $_POST['password'];
-
-			if (isset ($_POST['remember']) && $_POST['remember'])
-				$rememberPass = TRUE;
-		}
-		elseif (isset ($_SESSION['user']))
-		{
-			$user = $_SESSION['user'];
-			$password = $_SESSION['password'];
-			$credentialsChanged = FALSE;
-		}
-		elseif (isset ($_COOKIE['vn_user']) && isset ($_COOKIE['vn_pass']))
-		{
-			$user = $_COOKIE['vn_user'];
-			$password = base64_decode ($_COOKIE['vn_pass']);
-			$rememberPass = TRUE;
-		}
-
-		if (!isset ($user))
-			throw new SessionExpiredException ();
-
-		try {
-			$db = $this->app->createConnection ($user, $password);
-			$db->query ('CALL user_session_start (#)', [session_id ()]);
-			$this->conn = $db;
-
-			if ($rememberUser)
-			{
-				$cookieLife = time () + 7 * 86400; // 7 Days
-				setcookie ('vn_user', $user, $cookieLife);
-
-				if ($rememberPass)
-					setcookie ('vn_pass',
-						base64_encode ($password), $cookieLife);
-			}
-
-			$_SESSION['user'] = $user;
-			$_SESSION['password'] = $password;
-		}
-		catch (\Exception $e)
-		{
-			$this->conn = NULL;
-			throw new BadLoginException ();
-		}
-
-		// Registering the user access
-
-		if (!$wasLoged)
-			unset ($_SESSION['visitUser']);
-
-		if (isset ($_SESSION['access'])
-		&& !isset ($_SESSION['visitUser']))
-		{
-			$sysConn = $this->getSysConn ();
-			$_SESSION['visitUser'] = $sysConn->getValue (
-				'CALL visit_user_new (#, #, #)',
-				[
-					 $_SESSION['access']
-					,nullIf ($_SESSION, 'visitUser')
-					,session_id ()
-				]
-			);
-	
-			if (!isset ($_SESSION['visitUnknown']))
-				$_SESSION['visitUnknown'] = $_SESSION['visitUser'];
-		}
-		
-		return $db;
-	}
-	
-	/**
-	 * Cleans the last saved used credentials.
-	 **/
-	function logout ()
-	{
-		$_SESSION['visitUser'] = nullIf ($_SESSION, 'visitUnknown');
-		
-		setcookie ('vn_pass', '', -1);
-		unset ($_COOKIE['vn_pass']);
-		unset ($_SESSION['user']);
-		unset ($_SESSION['password']);
-		
-		if ($this->conn)
-		{
-			$this->conn->query (
-				'DELETE FROM user_session_view '
-				 .'WHERE connection_id = CONNECTION_ID()'
-			);
-			$this->conn->close ();
-			$this->conn = NULL;
-		}
-	}
-
 	/**
 	 * Deinitializes the Application. When init method is called, this 
 	 * function is called automatically at the end of the script .
diff --git a/vn/web/service.php b/vn/web/service.php
index f90036df..b785c9e8 100755
--- a/vn/web/service.php
+++ b/vn/web/service.php
@@ -29,7 +29,6 @@ class OutdatedVersionException extends Lib\UserException {}
 abstract class Service
 {
 	protected $app;
-	protected $conn = NULL;
 
 	function __construct ($app)
 	{
@@ -132,7 +131,7 @@ abstract class Service
 	function getVersion ()
 	{
 		return (int) strftime ('%G%m%d%H%M%S',
-			filectime (__FILE__ /* $_SERVER['SCRIPT_FILENAME'] */));
+			filectime ($_SERVER['SCRIPT_FILENAME']));
 	}
 }