diff --git a/application/controllers/system/UDF.php b/application/controllers/system/UDF.php
index 4f08ad576..e4e53fa3f 100644
--- a/application/controllers/system/UDF.php
+++ b/application/controllers/system/UDF.php
@@ -11,8 +11,8 @@ class UDF extends VileSci_Controller
         // Load session library
         $this->load->library('session');
         
-        // Loads the widget library
-		$this->load->library('WidgetLib');
+        // Loads the UDF library
+		$this->load->library('UDFLib');
 		
 		// 
 		$this->load->model('person/Person_model', 'PersonModel');
diff --git a/application/helpers/fhc_helper.php b/application/helpers/fhc_helper.php
index c2832d55d..a29ac240d 100644
--- a/application/helpers/fhc_helper.php
+++ b/application/helpers/fhc_helper.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * FH-Complete
  *
@@ -10,8 +11,7 @@
  * @since	Version 1.0.0
  * @filesource
  */
-if (! defined('BASEPATH'))
-	exit('No direct script access allowed');
+if (! defined('BASEPATH')) exit('No direct script access allowed');
 
 /**
  * FHC Helper
@@ -25,7 +25,6 @@ if (! defined('BASEPATH'))
 
 // ------------------------------------------------------------------------
 
-
 /**
  * generateToken() - generates a new token for diffent use
  * - reading Messages from external
@@ -75,4 +74,66 @@ function var_dump_to_error_log($parameter)
 	$ob_get_contents = ob_get_contents();
 	ob_end_clean();
 	error_log(str_replace("\n", '', $ob_get_contents));
+}
+
+/**
+ * 
+ */
+function loadResource($path, $resources = null, $subdir = false)
+{
+	$_ci = & get_instance();
+	
+	// 
+	if (strrpos($path, '/') < strlen($path) - 1)
+	{
+		$path .= '/';
+	}
+	
+	// 
+	$tmpResources = $resources;
+	if ($resources == null)
+	{
+		$tmpResources = array();
+	}
+	else if (!is_array($resources))
+	{
+		$tmpResources = array($resources);
+	}
+	
+	// 
+	$tmpPaths = array($path);
+	// NOTE: Used @ to prevent ugly error messages
+	if (is_dir($path) && ($dirHandler = @opendir($path)) !== false)
+	{
+		while (($entry = readdir($dirHandler)) !== false)
+		{
+			// 
+			if ($subdir === true && $entry != '.' && $entry != '..' && is_dir($entry))
+			{
+				$tmpPaths[] = $entry;
+			}
+			// 
+			if ($resources == null && is_file($path.$entry))
+			{
+				if ($entry != ($tmpName = str_replace('.php', '', $entry)))
+				{
+					$tmpResources[] = $tmpName;
+				}
+			}
+		}
+		closedir($dirHandler);
+	}
+	
+	// 
+	foreach($tmpResources as $tmpResource)
+	{
+		foreach($tmpPaths as $tmpPath)
+		{
+			$fileName = $tmpPath.$tmpResource.'.php';
+			if (file_exists($fileName))
+			{
+				include_once($fileName);
+			}
+		}
+	}
 }
\ No newline at end of file
diff --git a/application/libraries/UDFLib.php b/application/libraries/UDFLib.php
new file mode 100644
index 000000000..c73e428f9
--- /dev/null
+++ b/application/libraries/UDFLib.php
@@ -0,0 +1,77 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+/**
+ * Library to manage UDF
+ */
+class UDFLib
+{
+	const WIDGET_NAME = 'UDFWidget';
+	const SCHEMA_ARG_NAME = 'schema';
+	const TABLE_ARG_NAME = 'table';
+	const FIELD_ARG_NAME = 'field';
+	const UDFS_ARG_NAME = 'udfs';
+	
+	// HTML components
+	const TITLE = 'description';
+	const LABEL = 'title';
+	const PLACEHOLDER = 'placeholder';
+	const DEFAULT_VALUE = 'defaultValue';
+	
+	// Validation attributes
+	const REGEX = 'regex';
+	const REQUIRED = 'required';
+	const MAX_VALUE = 'max-value';
+	const MIN_VALUE = 'min-value';
+	const MAX_LENGTH = 'max-length';
+	const MIN_LENGTH = 'min-length';
+	
+	private $_ci;
+	
+	public function __construct($config = array())
+	{
+		$this->_ci = & get_instance();
+		
+		$this->_ci->load->helper('fhc');
+		
+		// Loads the widget library
+		$this->_ci->load->library('WidgetLib');
+		
+        // Loads widgets to render HTML elements
+        // NOTE: the first one to be loaded must be HTMLWidget
+        loadResource(APPPATH . 'widgets/udf');
+	}
+	
+	/**
+     * 
+     */
+    public function UDFWidget($args, $htmlArgs = array())
+    {
+		if (!empty($args[UDFLib::SCHEMA_ARG_NAME]) && !empty($args[UDFLib::TABLE_ARG_NAME]))
+		{
+			// 
+			if (empty($args[UDFLib::FIELD_ARG_NAME]) && !isset($htmlArgs[HTMLWidget::EXTERNAL_BLOCK]))
+			{
+				$htmlArgs[HTMLWidget::EXTERNAL_BLOCK] = true;
+			}
+			
+			return $this->_ci->widgetlib->widget(
+				UDFLib::WIDGET_NAME,
+				$args,
+				$htmlArgs
+			);
+		}
+		else
+		{
+			if (empty($args[UDFLib::SCHEMA_ARG_NAME]))
+			{
+				show_error(UDFLib::SCHEMA_ARG_NAME.' parameter is missing!');
+			}
+			if (empty($args[UDFLib::TABLE_ARG_NAME]))
+			{
+				show_error(UDFLib::TABLE_ARG_NAME.' parameter is missing!');
+			}
+		}
+    }
+}
\ No newline at end of file
diff --git a/application/libraries/WidgetLib.php b/application/libraries/WidgetLib.php
index 9996ce684..bd6694136 100644
--- a/application/libraries/WidgetLib.php
+++ b/application/libraries/WidgetLib.php
@@ -28,6 +28,9 @@ if (!defined("BASEPATH")) exit("No direct script access allowed");
 
 class WidgetLib
 {
+	const DIR_HTML_WIDGETS = 'html';
+	const HTML_WIDGET_NAME = 'HTMLWidget';
+	
     /* default values */
     private $_template = 'template';
     private $_parser = FALSE;
@@ -45,8 +48,15 @@ class WidgetLib
 	{
         $this->_ci = & get_instance();
         
-        // set the default widget path with APPPATH
+        $this->_ci->load->helper('fhc');
+        
+        // Set the default widget path with APPPATH
         $this->_widget_path = APPPATH . 'widgets/';
+		
+        // Loads widgets to render HTML elements
+        // NOTE: the first one to be loaded must be HTMLWidget
+        loadResource($this->_widget_path.WidgetLib::DIR_HTML_WIDGETS, WidgetLib::HTML_WIDGET_NAME);
+        loadResource($this->_widget_path.WidgetLib::DIR_HTML_WIDGETS);
         
         if (!empty($config))
             $this->initialize($config);
@@ -184,65 +194,15 @@ class WidgetLib
      */
     public function widget($name, $data = array(), $htmlArgs = array())
     {
-        $class = str_replace('.php', '', trim($name, '/'));
+		// 
+        loadResource($this->_widget_path, $name, true);
         
-        // determine path and widget class name
-        $path = $this->_widget_path;
-        if (($last_slash = strrpos($class, '/')) !== FALSE) {
-            $path += substr($class, 0, $last_slash);
-            $class = substr($class, $last_slash + 1);
+        if (!class_exists($name))
+        {
+            show_error("Widget '" . $name . "' was not found.");
         }
         
-        // new widget
-        if (!class_exists($class)) {
-            // try both lowercase and capitalized versions
-            foreach (array(ucfirst($class), strtolower($class)) as $class) {
-                if (file_exists($path . $class . '.php')) {
-                    include_once ($path . $class . '.php');
-                    
-                    // found the file, stop looking
-                    break;
-                }
-            }
-        }
-        
-        if (!class_exists($class)) {
-            show_error("Widget '" . $class . "' was not found.");
-        }
-        
-        return new $class($class, $data, $htmlArgs);
-    }
-    
-    /**
-     * 
-     */
-    public function UDFWidget($args, $htmlArgs = array())
-    {
-		if (!empty($args[UDFWidgetTpl::SCHEMA_ARG_NAME]) && !empty($args[UDFWidgetTpl::TABLE_ARG_NAME]))
-		{
-			// 
-			if (empty($args[UDFWidgetTpl::FIELD_ARG_NAME]) && !isset($htmlArgs[Widget::EXTERNAL_BLOCK]))
-			{
-				$htmlArgs[Widget::EXTERNAL_BLOCK] = true;
-			}
-			
-			return $this->widget(
-				UDFWidgetTpl::WIDGET_NAME,
-				$args,
-				$htmlArgs
-			);
-		}
-		else
-		{
-			if (empty($args[UDFWidgetTpl::SCHEMA_ARG_NAME]))
-			{
-				show_error(UDFWidgetTpl::SCHEMA_ARG_NAME.' parameter is missing!');
-			}
-			if (empty($args[UDFWidgetTpl::TABLE_ARG_NAME]))
-			{
-				show_error(UDFWidgetTpl::TABLE_ARG_NAME.' parameter is missing!');
-			}
-		}
+        return new $name($name, $data, $htmlArgs);
     }
     
     /**
@@ -635,35 +595,10 @@ class Partial
 }
 
 /**
- * The mother of all widgets
- * it represent a generic HTML element
+ * General widget element
  */
 class Widget extends Partial
 {
-	// The name of the array present in the data array given to the view that will render this widget
-    const HTML_ARG_NAME = 'HTML';
-	const HTML_DEFAULT_VALUE = ''; // Default value of the html element
-    const HTML_NAME = 'name'; // HTML name attribute
-    const HTML_ID = 'id'; // HTML id attribute
-    
-    const EXTERNAL_BLOCK = 'externalBlock'; // 
-    const EXTERNAL_START_BLOCK_HTML_TAG = '<div>'; //
-    const EXTERNAL_END_BLOCK_HTML_TAG = '</div>'; // 
-    
-    /**
-     * It gets also the htmlArgs array as parameter, it will be used to set the HTML properties
-     */
-    public function __construct($name, $args = array(), $htmlArgs = array())
-	{
-		parent::__construct($name, $args);
-		
-		// Initialising HTML properties
-		$this->_setHtmlProperties($htmlArgs);
-        
-        // Loads helper message to manage returning messages
-		$this->load->helper('message');
-	}
-	
 	/**
 	 * (non-PHPdoc)
 	 * @see Partial::content()
@@ -690,456 +625,4 @@ class Widget extends Partial
 		
 		return parent::content();
 	}
-	
-    /**
-     * Initialising html properties, such as the id and name attributes of the HTML element
-     */
-    private function _setHtmlProperties($htmlArgs)
-    {
-		// If $htmlArgs wasn't already stored in $this->_args
-		if (!isset($this->_args[Widget::HTML_ARG_NAME]))
-		{
-			$this->_args[Widget::HTML_ARG_NAME] = array();
-			
-			// Avoids that elements in a HTML page have the same name or id
-			$randomIdentifier = uniqid(rand(0, 1000));
-			$this->_args[Widget::HTML_ARG_NAME][Widget::HTML_ID] = $randomIdentifier;
-			$this->_args[Widget::HTML_ARG_NAME][Widget::HTML_NAME] = $randomIdentifier;
-			
-			foreach($htmlArgs as $argName => $argValue)
-			{
-				$this->_args[Widget::HTML_ARG_NAME][$argName] = $argValue;
-			}
-		}
-    }
-    
-    /**
-	 * 
-	 */
-	public static function printAttribute($htmlArgs, $attribute, $isValuePresent = true)
-	{
-		if ($attribute != null)
-		{
-			if (isset($htmlArgs[$attribute]))
-			{
-				if ($isValuePresent === true)
-				{
-					$value = $htmlArgs[$attribute];
-					
-					if (is_bool($value))
-					{
-						$value = $value ? 'true' : 'false';
-					}
-					
-					echo sprintf('%s="%s"', $attribute, $value);
-				}
-				else
-				{
-					echo $attribute;
-				}
-			}
-		}
-	}
-	
-	/**
-	 * 
-	 */
-	public static function printStartBlock($htmlArgs)
-	{
-		if (isset($htmlArgs[Widget::EXTERNAL_BLOCK])
-			&& $htmlArgs[Widget::EXTERNAL_BLOCK] === true)
-		{
-			echo Widget::EXTERNAL_START_BLOCK_HTML_TAG;
-		}
-	}
-	
-	/**
-	 * 
-	 */
-	public static function printEndBlock($htmlArgs)
-	{
-		if (isset($htmlArgs[Widget::EXTERNAL_BLOCK])
-			&& $htmlArgs[Widget::EXTERNAL_BLOCK] === true)
-		{
-			echo Widget::EXTERNAL_END_BLOCK_HTML_TAG;
-		}
-	}
-}
-
-/**
- * It exends the Widget class to represent an HTML dropdown
- */
-class DropdownWidget extends Widget
-{
-	// The name of the element of the data array given to the view
-	// this element is an array of elements to be place inside the dropdown
-	const WIDGET_DATA_ELEMENTS_ARRAY_NAME = 'ELEMENTS_ARRAY';
-	// Name of the property that will be used to store the value attribute of the option tag
-	const ID_FIELD = 'id';
-	// Name of the property that will be used to store the value between the option tags
-	const DESCRIPTION_FIELD = 'description';
-	// The name of the element of the data array given to the view
-	// this element is used to tell what element of the dropdown is selected
-	const SELECTED_ELEMENT = 'selectedElement';
-	// 
-	const HTML_DEFAULT_VALUE = 'null';
-	
-	const SIZE = 'size'; // 
-	const MULTIPLE = 'multiple'; // 
-	
-	/**
-	 * 
-	 */
-	public function __construct($name, $args = array(), $htmlArgs = array())
-	{
-		parent::__construct($name, $args, $htmlArgs);
-		
-		// 
-		if (!isset($this->_args[DropdownWidget::SELECTED_ELEMENT]))
-		{
-			$this->_args[DropdownWidget::SELECTED_ELEMENT] = DropdownWidget::HTML_DEFAULT_VALUE;
-		}
-	}
-	
-    /**
-     * 
-     */
-    public function setMultiple()
-    {
-		$this->_args[Widget::HTML_ARG_NAME][DropdownWidget::MULTIPLE] = DropdownWidget::MULTIPLE;
-		$this->_args[Widget::HTML_ARG_NAME][Widget::HTML_NAME] .= '[]';
-    }
-    
-    /**
-     * 
-	 */
-    public function isMultipleDropdown()
-    {
-		$isMultipleDropdown = false;
-		
-		if (isset($this->_args[Widget::HTML_ARG_NAME][DropdownWidget::MULTIPLE])
-			&& $this->_args[Widget::HTML_ARG_NAME][DropdownWidget::MULTIPLE] == DropdownWidget::MULTIPLE)
-		{
-			$isMultipleDropdown = true;
-		}
-		
-		return $isMultipleDropdown;
-    }
-    
-    /**
-	 * Add the correct select to the model used to load a list of elemets for this dropdown
-	 * @param model $model the model used to load elements
-	 * @param string $idName the name of the field that will used to be the value of the option tag
-	 * @param string $descriptionName the name of the field that will used to be displayed in the dropdown
-	 */
-	protected function addSelectToModel($model, $idName, $descriptionName)
-	{
-		$model->addSelect(
-			sprintf(
-				'%s AS %s, %s AS %s',
-				$idName,
-				DropdownWidget::ID_FIELD,
-				$descriptionName,
-				DropdownWidget::DESCRIPTION_FIELD
-			)
-		);
-	}
-    
-	/**
-	 * Set the array used to populate the dropdown
-	 * @param array $elements list used to populate this dropdown
-	 * @param boolean $emptyElement if an empty element must be added at the beginning of the dropdown
-	 * @param string $stdDescription description of the empty element
-	 * @param string $noDataDescription description if no data are found
-	 * @param string $id value of the attribute value of the empty element
-	 */
-	protected function setElementsArray(
-		$elements, $emptyElement = false, $stdDescription = '' , $noDataDescription = 'No data found' , $id = DropdownWidget::HTML_DEFAULT_VALUE
-	)
-	{
-		$tmpElements = array();
-		
-		if (isError($elements))
-		{
-			if (is_object($elements) && isset($elements->retval))
-			{
-				show_error($elements->retval);
-			}
-			else if (is_string($elements))
-			{
-				show_error($elements);
-			}
-			else
-			{
-				show_error('Generic error occurred');
-			}
-		}
-		else
-		{
-			if ($emptyElement === true && $this->isMultipleDropdown() == false)
-			{
-				$tmpElements = $this->addElementAtBeginning(
-					$elements,
-					$stdDescription,
-					$noDataDescription,
-					$id
-				);
-			}
-			else
-			{
-				$tmpElements = $elements->retval;
-			}
-			
-			$this->_args[DropdownWidget::WIDGET_DATA_ELEMENTS_ARRAY_NAME] = $tmpElements;
-		}
-	}
-	
-	/**
-     * Adds an element to the beginning of the array
-     */
-	protected function addElementAtBeginning($elements, $stdDescription, $noDataDescription, $id)
-	{
-		$element = new stdClass();
-		$element->{DropdownWidget::ID_FIELD} = $id;
-		$element->{DropdownWidget::DESCRIPTION_FIELD} = $stdDescription;
-		
-		if (!hasData($elements))
-		{
-			$element->{DropdownWidget::DESCRIPTION_FIELD} = $noDataDescription;
-		}
-		
-		array_unshift($elements->retval, $element);
-		
-		return $elements->retval;
-	}
-	
-	/**
-	 * Loads the dropdown view with all the elements to be displayed
-	 */
-	protected function loadDropDownView()
-	{
-		$this->view('widgets/dropdown', $this->_args);
-	}
-}
-
-/**
- * 
- */
-class DropdownWidgetUDF extends DropdownWidget
-{
-	/**
-	 * 
-	 */
-	public function render($parameters)
-	{
-		$tmpElements = array();
-		
-		// 
-		foreach($parameters as $parameter)
-		{
-			// 
-			if ((is_array($parameter) && count($parameter) == 2)
-				|| (is_string($parameter) || is_numeric($parameter))
-				|| (is_object($parameter) && isset($parameter->{PARENT::ID_FIELD}) && isset($parameter->{PARENT::DESCRIPTION_FIELD})))
-			{
-				$element = new stdClass(); // 
-				// 
-				if (is_array($parameter) && count($parameter) == 2)
-				{
-					$element->{PARENT::ID_FIELD} = $parameter[0]; // 
-					$element->{PARENT::DESCRIPTION_FIELD} = $parameter[1]; // 
-				}
-				// 
-				else if (is_string($parameter) || is_numeric($parameter))
-				{
-					$element->{PARENT::ID_FIELD} = $parameter; // 
-					$element->{PARENT::DESCRIPTION_FIELD} = $parameter; // 
-				}
-				// 
-				else if (is_object($parameter) && isset($parameter->{PARENT::ID_FIELD}) && isset($parameter->{PARENT::DESCRIPTION_FIELD}))
-				{
-					$element->{PARENT::ID_FIELD} = $parameter->{PARENT::ID_FIELD}; // 
-					$element->{PARENT::DESCRIPTION_FIELD} = $parameter->{PARENT::DESCRIPTION_FIELD}; // 
-				}
-				
-				array_push($tmpElements, $element); // 
-			}
-		}
-		
-		$this->setElementsArray(
-			success($tmpElements),
-			true,
-			$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::PLACEHOLDER],
-			'No data found for this UDF'
-		);
-		
-		$this->loadDropDownView();
-		
-		echo $this->content();
-    }
-}
-
-/**
- * It exends the Widget class to represent an HTML textarea
- */
-class TextareaWidget extends Widget
-{
-	const TEXT = 'text'; // 
-	const ROWS = 'rows'; // 
-	const COLS = 'cols'; // 
-	
-	/**
-	 * 
-	 */
-	protected function setText($text)
-	{
-		$this->_args[TextareaWidget::TEXT] = $text;
-	}
-	
-	/**
-	 * 
-	 */
-	protected function loadTextareaView()
-	{
-		$this->view('widgets/textarea', $this->_args);
-	}
-}
-
-/**
- * 
- */
-class TextareaWidgetUDF extends TextareaWidget
-{
-	/**
-	 * 
-	 */
-	public function render($parameters)
-	{
-		if ($parameters != null)
-		{
-			$this->setText($parameters);
-		}
-		else
-		{
-			$this->setText('');
-		}
-		
-		$this->loadTextareaView();
-		
-		echo $this->content();
-    }
-}
-
-/**
- * It exends the Widget class to represent an HTML textarea
- */
-class TextfieldWidget extends Widget
-{
-	const VALUE = 'text'; // 
-	const SIZE = 'size'; // 
-	
-	/**
-	 * 
-	 */
-	protected function setValue($value)
-	{
-		$this->_args[TextfieldWidget::VALUE] = $value;
-	}
-	
-	/**
-	 * 
-	 */
-	protected function loadTextfieldView()
-	{
-		$this->view('widgets/textfield', $this->_args);
-	}
-}
-
-/**
- * 
- */
-class TextfieldWidgetUDF extends TextfieldWidget
-{
-	/**
-	 * 
-	 */
-	public function render($parameters)
-	{
-		if ($parameters != null)
-		{
-			$this->setValue($parameters);
-		}
-		else
-		{
-			$this->setValue('');
-		}
-		
-		$this->loadTextfieldView();
-		
-		echo $this->content();
-    }
-}
-
-/**
- * It exends the Widget class to represent an HTML dropdown
- */
-class CheckboxWidget extends Widget
-{
-	// Name of the property that will be used to store the value attribute of the option tag
-	const VALUE_FIELD = 'value';
-	// Name of the property that will be used to store the value between the option tags
-	const DESCRIPTION_FIELD = 'description';
-	// Value of value attribute of the checkbox
-	const CHECKBOX_VALUE = 'true';
-	
-	/**
-	 * 
-	 */
-	protected function loadCheckboxView()
-	{
-		$this->view('widgets/checkbox', $this->_args);
-	}
-}
-
-/**
- * 
- */
-class CheckboxWidgetUDF extends CheckboxWidget
-{
-	/**
-	 * 
-	 */
-	public function render()
-	{
-		$this->loadCheckboxView();
-		
-		echo $this->content();
-    }
-}
-
-/**
- * Defined here because these constants can be used
- * in the views also
- */
-abstract class UDFWidgetTpl extends Widget
-{
-	const WIDGET_NAME = 'UDFWidget';
-	const SCHEMA_ARG_NAME = 'schema';
-	const TABLE_ARG_NAME = 'table';
-	const FIELD_ARG_NAME = 'field';
-	const UDFS_ARG_NAME = 'udfs';
-	
-	// HTML components
-	const TITLE = 'description';
-	const LABEL = 'title';
-	const PLACEHOLDER = 'placeholder';
-	const DEFAULT_VALUE = 'defaultValue';
-	
-	// Validation attributes
-	const REGEX = 'regex';
-	const REQUIRED = 'required';
-	const MAX_VALUE = 'max-value';
-	const MIN_VALUE = 'min-value';
-	const MAX_LENGTH = 'max-length';
-	const MIN_LENGTH = 'min-length';
 }
\ No newline at end of file
diff --git a/application/views/system/udf.php b/application/views/system/udf.php
index 5fd1bd6d9..058d73ec3 100644
--- a/application/views/system/udf.php
+++ b/application/views/system/udf.php
@@ -62,11 +62,11 @@
 				?>
 					<div class="div-cell">
 						<?php
-							echo $this->widgetlib->UDFWidget(
+							echo $this->udflib->UDFWidget(
 								array(
-									UDFWidgetTpl::SCHEMA_ARG_NAME => 'public',
-									UDFWidgetTpl::TABLE_ARG_NAME => 'tbl_person',
-									UDFWidgetTpl::UDFS_ARG_NAME => $personUdfs
+									UDFLib::SCHEMA_ARG_NAME => 'public',
+									UDFLib::TABLE_ARG_NAME => 'tbl_person',
+									UDFLib::UDFS_ARG_NAME => $personUdfs
 								)
 							);
 						?>
@@ -83,11 +83,11 @@
 				?>
 					<div class="div-cell">
 						<?php
-							echo $this->widgetlib->UDFWidget(
+							echo $this->udflib->UDFWidget(
 								array(
-									UDFWidgetTpl::SCHEMA_ARG_NAME => 'public',
-									UDFWidgetTpl::TABLE_ARG_NAME => 'tbl_prestudent',
-									UDFWidgetTpl::UDFS_ARG_NAME => $prestudentUdfs
+									UDFLib::SCHEMA_ARG_NAME => 'public',
+									UDFLib::TABLE_ARG_NAME => 'tbl_prestudent',
+									UDFLib::UDFS_ARG_NAME => $prestudentUdfs
 								)
 							);
 						?>
diff --git a/application/views/widgets/checkbox.php b/application/views/widgets/checkbox.php
index 97241ae67..50832b134 100644
--- a/application/views/widgets/checkbox.php
+++ b/application/views/widgets/checkbox.php
@@ -1,17 +1,17 @@
-<?php Widget::printStartBlock(${Widget::HTML_ARG_NAME}); ?>
+<?php HTMLWidget::printStartBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
 
 	<div class="div-table">
 		<div class="div-row">
 			<?php
-				if (isset(${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]))
+				if (isset(${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]))
 				{
 			?>
 				<div class="div-cell-label valign-middle width-150px">
 					<label
-						for="<?php echo ${Widget::HTML_ARG_NAME}[Widget::HTML_ID]; ?>"
-						<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
+						for="<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::HTML_ID]; ?>"
+						<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
 					>
-						<?php echo ${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]; ?>
+						<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]; ?>
 					</label>
 				</div>
 			<?php
@@ -20,11 +20,11 @@
 			<div class="div-cell-data width-30px">
 				<input
 					type="checkbox"
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_ID); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_NAME); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::REGEX); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::TITLE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_ID); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_NAME); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REGEX); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::TITLE); ?>
 					<?php
 						$checked = '';
 						if (${CheckboxWidget::VALUE_FIELD} === true)
@@ -39,4 +39,4 @@
 		</div>
 	</div>
 
-<?php Widget::printEndBlock(${Widget::HTML_ARG_NAME}); ?>
\ No newline at end of file
+<?php HTMLWidget::printEndBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
\ No newline at end of file
diff --git a/application/views/widgets/dropdown.php b/application/views/widgets/dropdown.php
index 38a6ea973..5d6150a07 100644
--- a/application/views/widgets/dropdown.php
+++ b/application/views/widgets/dropdown.php
@@ -1,22 +1,22 @@
-<?php Widget::printStartBlock(${Widget::HTML_ARG_NAME}); ?>
+<?php HTMLWidget::printStartBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
 
 	<div class="div-table">
 		<div class="div-row">
 			<?php
-				if (isset(${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]))
+				if (isset(${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]))
 				{
 					$align = "valign-middle";
-					if (isset(${Widget::HTML_ARG_NAME}[DropdownWidget::MULTIPLE]))
+					if (isset(${HTMLWidget::HTML_ARG_NAME}[DropdownWidget::MULTIPLE]))
 					{
 						$align = "valign-top";
 					}
 			?>
 				<div class="div-cell width-150px <?php echo $align; ?>">
 					<label
-						for="<?php echo ${Widget::HTML_ARG_NAME}[Widget::HTML_ID]; ?>"
-						<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
+						for="<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::HTML_ID]; ?>"
+						<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
 					>
-						<?php echo ${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]; ?>
+						<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]; ?>
 					</label>
 				</div>
 			<?php
@@ -24,15 +24,15 @@
 			?>
 			<div class="div-cell width-150px">
 				<select
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_ID); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_NAME); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, DropdownWidget::SIZE); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, DropdownWidget::MULTIPLE, false); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::MAX_VALUE); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::MIN_VALUE); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::REGEX); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::TITLE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_ID); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_NAME); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, DropdownWidget::SIZE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, DropdownWidget::MULTIPLE, false); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::MAX_VALUE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::MIN_VALUE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REGEX); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::TITLE); ?>
 				>
 					<?php
 						$elements = ${DropdownWidget::WIDGET_DATA_ELEMENTS_ARRAY_NAME};
@@ -71,4 +71,4 @@
 		</div>
 	</div>
 
-<?php Widget::printEndBlock(${Widget::HTML_ARG_NAME}); ?>
\ No newline at end of file
+<?php HTMLWidget::printEndBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
\ No newline at end of file
diff --git a/application/views/widgets/textarea.php b/application/views/widgets/textarea.php
index 7cbe67efb..6866c17a5 100644
--- a/application/views/widgets/textarea.php
+++ b/application/views/widgets/textarea.php
@@ -1,17 +1,17 @@
-<?php Widget::printStartBlock(${Widget::HTML_ARG_NAME}); ?>
+<?php HTMLWidget::printStartBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
 
 	<div class="div-table">
 		<div class="div-row">
 			<?php
-				if (isset(${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]))
+				if (isset(${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]))
 				{
 			?>
 				<div class="div-cell width-150px valign-top">
 					<label
-						for="<?php echo ${Widget::HTML_ARG_NAME}[Widget::HTML_ID]; ?>"
-						<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
+						for="<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::HTML_ID]; ?>"
+						<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
 					>
-						<?php echo ${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]; ?>
+						<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]; ?>
 					</label>
 				</div>
 			<?php
@@ -19,17 +19,17 @@
 			?>
 			<div class="div-cell width-150px">
 				<textarea
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_ID); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_NAME); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, TextareaWidget::ROWS); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, TextareaWidget::COLS); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::PLACEHOLDER); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::REGEX); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::TITLE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_ID); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_NAME); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, TextareaWidget::ROWS); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, TextareaWidget::COLS); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::PLACEHOLDER); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REGEX); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::TITLE); ?>
 				><?php echo ${TextareaWidget::TEXT}; ?></textarea>
 			</div>
 		</div>
 	</div>
 
-<?php Widget::printEndBlock(${Widget::HTML_ARG_NAME}); ?>
\ No newline at end of file
+<?php HTMLWidget::printEndBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
\ No newline at end of file
diff --git a/application/views/widgets/textfield.php b/application/views/widgets/textfield.php
index d9cba43e0..0807f3ed1 100644
--- a/application/views/widgets/textfield.php
+++ b/application/views/widgets/textfield.php
@@ -1,17 +1,17 @@
-<?php Widget::printStartBlock(${Widget::HTML_ARG_NAME}); ?>
+<?php HTMLWidget::printStartBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
 
 	<div class="div-table">
 		<div class="div-row">
 			<?php
-				if (isset(${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]))
+				if (isset(${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]))
 				{
 			?>
 				<div class="div-cell width-150px valign-middle">
 					<label
-						for="<?php echo ${Widget::HTML_ARG_NAME}[Widget::HTML_ID]; ?>"
-						<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
+						for="<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::HTML_ID]; ?>"
+						<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
 					>
-						<?php echo ${Widget::HTML_ARG_NAME}[UDFWidgetTpl::LABEL]; ?>
+						<?php echo ${HTMLWidget::HTML_ARG_NAME}[HTMLWidget::LABEL]; ?>
 					</label>
 				</div>
 			<?php
@@ -20,17 +20,17 @@
 			<div class="div-cell width-150px">
 				<input
 					type="text"
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_ID); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, Widget::HTML_NAME); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, TextfieldWidget::SIZE); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidget::REQUIRED); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::PLACEHOLDER); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::REGEX); ?>
-					<?php Widget::printAttribute(${Widget::HTML_ARG_NAME}, UDFWidgetTpl::TITLE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_ID); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::HTML_NAME); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, TextfieldWidget::SIZE); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REQUIRED); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::PLACEHOLDER); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::REGEX); ?>
+					<?php HTMLWidget::printAttribute(${HTMLWidget::HTML_ARG_NAME}, HTMLWidget::TITLE); ?>
 					value="<?php echo ${TextfieldWidget::VALUE}; ?>"
 				>
 			</div>
 		</div>
 	</div>
 
-<?php Widget::printEndBlock(${Widget::HTML_ARG_NAME}); ?>
\ No newline at end of file
+<?php HTMLWidget::printEndBlock(${HTMLWidget::HTML_ARG_NAME}); ?>
\ No newline at end of file
diff --git a/application/widgets/html/CheckboxWidget.php b/application/widgets/html/CheckboxWidget.php
new file mode 100644
index 000000000..6a77f0d43
--- /dev/null
+++ b/application/widgets/html/CheckboxWidget.php
@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * It exends the Widget class to represent an HTML dropdown
+ */
+class CheckboxWidget extends HTMLWidget
+{
+	// Name of the property that will be used to store the value attribute of the option tag
+	const VALUE_FIELD = 'value';
+	// Name of the property that will be used to store the value between the option tags
+	const DESCRIPTION_FIELD = 'description';
+	// Value of value attribute of the checkbox
+	const CHECKBOX_VALUE = 'true';
+	
+	/**
+	 * 
+	 */
+	protected function loadCheckboxView()
+	{
+		$this->view('widgets/checkbox', $this->_args);
+	}
+}
\ No newline at end of file
diff --git a/application/widgets/html/DropdownWidget.php b/application/widgets/html/DropdownWidget.php
new file mode 100644
index 000000000..63e1b414d
--- /dev/null
+++ b/application/widgets/html/DropdownWidget.php
@@ -0,0 +1,157 @@
+<?php
+
+/**
+ * It exends the Widget class to represent an HTML dropdown
+ */
+class DropdownWidget extends HTMLWidget
+{
+	// The name of the element of the data array given to the view
+	// this element is an array of elements to be place inside the dropdown
+	const WIDGET_DATA_ELEMENTS_ARRAY_NAME = 'ELEMENTS_ARRAY';
+	// Name of the property that will be used to store the value attribute of the option tag
+	const ID_FIELD = 'id';
+	// Name of the property that will be used to store the value between the option tags
+	const DESCRIPTION_FIELD = 'description';
+	// The name of the element of the data array given to the view
+	// this element is used to tell what element of the dropdown is selected
+	const SELECTED_ELEMENT = 'selectedElement';
+	// 
+	const HTML_DEFAULT_VALUE = 'null';
+	
+	const SIZE = 'size'; // 
+	const MULTIPLE = 'multiple'; // 
+	
+	/**
+	 * 
+	 */
+	public function __construct($name, $args = array(), $htmlArgs = array())
+	{
+		parent::__construct($name, $args, $htmlArgs);
+		
+		// 
+		if (!isset($this->_args[DropdownWidget::SELECTED_ELEMENT]))
+		{
+			$this->_args[DropdownWidget::SELECTED_ELEMENT] = DropdownWidget::HTML_DEFAULT_VALUE;
+		}
+	}
+	
+    /**
+     * 
+     */
+    public function setMultiple()
+    {
+		$this->_args[HTMLWidget::HTML_ARG_NAME][DropdownWidget::MULTIPLE] = DropdownWidget::MULTIPLE;
+		$this->_args[HTMLWidget::HTML_ARG_NAME][HTMLWidget::HTML_NAME] .= '[]';
+    }
+    
+    /**
+     * 
+	 */
+    public function isMultipleDropdown()
+    {
+		$isMultipleDropdown = false;
+		
+		if (isset($this->_args[HTMLWidget::HTML_ARG_NAME][DropdownWidget::MULTIPLE])
+			&& $this->_args[HTMLWidget::HTML_ARG_NAME][DropdownWidget::MULTIPLE] == DropdownWidget::MULTIPLE)
+		{
+			$isMultipleDropdown = true;
+		}
+		
+		return $isMultipleDropdown;
+    }
+    
+    /**
+	 * Add the correct select to the model used to load a list of elemets for this dropdown
+	 * @param model $model the model used to load elements
+	 * @param string $idName the name of the field that will used to be the value of the option tag
+	 * @param string $descriptionName the name of the field that will used to be displayed in the dropdown
+	 */
+	protected function addSelectToModel($model, $idName, $descriptionName)
+	{
+		$model->addSelect(
+			sprintf(
+				'%s AS %s, %s AS %s',
+				$idName,
+				DropdownWidget::ID_FIELD,
+				$descriptionName,
+				DropdownWidget::DESCRIPTION_FIELD
+			)
+		);
+	}
+    
+	/**
+	 * Set the array used to populate the dropdown
+	 * @param array $elements list used to populate this dropdown
+	 * @param boolean $emptyElement if an empty element must be added at the beginning of the dropdown
+	 * @param string $stdDescription description of the empty element
+	 * @param string $noDataDescription description if no data are found
+	 * @param string $id value of the attribute value of the empty element
+	 */
+	protected function setElementsArray(
+		$elements, $emptyElement = false, $stdDescription = '' , $noDataDescription = 'No data found' , $id = DropdownWidget::HTML_DEFAULT_VALUE
+	)
+	{
+		$tmpElements = array();
+		
+		if (isError($elements))
+		{
+			if (is_object($elements) && isset($elements->retval))
+			{
+				show_error($elements->retval);
+			}
+			else if (is_string($elements))
+			{
+				show_error($elements);
+			}
+			else
+			{
+				show_error('Generic error occurred');
+			}
+		}
+		else
+		{
+			if ($emptyElement === true && $this->isMultipleDropdown() == false)
+			{
+				$tmpElements = $this->addElementAtBeginning(
+					$elements,
+					$stdDescription,
+					$noDataDescription,
+					$id
+				);
+			}
+			else
+			{
+				$tmpElements = $elements->retval;
+			}
+			
+			$this->_args[DropdownWidget::WIDGET_DATA_ELEMENTS_ARRAY_NAME] = $tmpElements;
+		}
+	}
+	
+	/**
+     * Adds an element to the beginning of the array
+     */
+	protected function addElementAtBeginning($elements, $stdDescription, $noDataDescription, $id)
+	{
+		$element = new stdClass();
+		$element->{DropdownWidget::ID_FIELD} = $id;
+		$element->{DropdownWidget::DESCRIPTION_FIELD} = $stdDescription;
+		
+		if (!hasData($elements))
+		{
+			$element->{DropdownWidget::DESCRIPTION_FIELD} = $noDataDescription;
+		}
+		
+		array_unshift($elements->retval, $element);
+		
+		return $elements->retval;
+	}
+	
+	/**
+	 * Loads the dropdown view with all the elements to be displayed
+	 */
+	protected function loadDropDownView()
+	{
+		$this->view('widgets/dropdown', $this->_args);
+	}
+}
\ No newline at end of file
diff --git a/application/widgets/html/HTMLWidget.php b/application/widgets/html/HTMLWidget.php
new file mode 100644
index 000000000..04f5d4d5f
--- /dev/null
+++ b/application/widgets/html/HTMLWidget.php
@@ -0,0 +1,117 @@
+<?php
+
+/**
+ * Represents a generic HTML element
+ */
+class HTMLWidget extends Widget
+{
+	// The name of the array present in the data array given to the view that will render this widget
+    const HTML_ARG_NAME = 'HTML';
+	const HTML_DEFAULT_VALUE = ''; // Default value of the html element
+    const HTML_NAME = 'name'; // HTML name attribute
+    const HTML_ID = 'id'; // HTML id attribute
+    
+    // 
+    const EXTERNAL_BLOCK = 'externalBlock'; // 
+    const EXTERNAL_START_BLOCK_HTML_TAG = '<div>'; //
+    const EXTERNAL_END_BLOCK_HTML_TAG = '</div>'; // 
+    
+    // 
+    const LABEL = 'title';
+	const REGEX = 'regex';
+	const TITLE = 'description';
+	const REQUIRED = 'udf-required';
+	const MAX_VALUE = 'max-value';
+	const MIN_VALUE = 'min-value';
+	const MAX_LENGTH = 'max-length';
+	const MIN_LENGTH = 'min-length';
+	const PLACEHOLDER = 'placeholder';
+    
+    /**
+     * It gets also the htmlArgs array as parameter, it will be used to set the HTML properties
+     */
+    public function __construct($name, $args = array(), $htmlArgs = array())
+	{
+		parent::__construct($name, $args);
+		
+		// Initialising HTML properties
+		$this->_setHtmlProperties($htmlArgs);
+        
+        // Loads helper message to manage returning messages
+		$this->load->helper('message');
+	}
+    
+    /**
+     * Initialising html properties, such as the id and name attributes of the HTML element
+     */
+    private function _setHtmlProperties($htmlArgs)
+    {
+		// If $htmlArgs wasn't already stored in $this->_args
+		if (!isset($this->_args[HTMLWidget::HTML_ARG_NAME]))
+		{
+			$this->_args[HTMLWidget::HTML_ARG_NAME] = array();
+			
+			// Avoids that elements in a HTML page have the same name or id
+			$randomIdentifier = uniqid(rand(0, 1000));
+			$this->_args[HTMLWidget::HTML_ARG_NAME][HTMLWidget::HTML_ID] = $randomIdentifier;
+			$this->_args[HTMLWidget::HTML_ARG_NAME][HTMLWidget::HTML_NAME] = $randomIdentifier;
+			
+			foreach($htmlArgs as $argName => $argValue)
+			{
+				$this->_args[HTMLWidget::HTML_ARG_NAME][$argName] = $argValue;
+			}
+		}
+    }
+    
+    /**
+	 * 
+	 */
+	public static function printAttribute($htmlArgs, $attribute, $isValuePresent = true)
+	{
+		if ($attribute != null)
+		{
+			if (isset($htmlArgs[$attribute]))
+			{
+				if ($isValuePresent === true)
+				{
+					$value = $htmlArgs[$attribute];
+					
+					if (is_bool($value))
+					{
+						$value = $value ? 'true' : 'false';
+					}
+					
+					echo sprintf('%s="%s"', $attribute, $value);
+				}
+				else
+				{
+					echo $attribute;
+				}
+			}
+		}
+	}
+	
+	/**
+	 * 
+	 */
+	public static function printStartBlock($htmlArgs)
+	{
+		if (isset($htmlArgs[HTMLWidget::EXTERNAL_BLOCK])
+			&& $htmlArgs[HTMLWidget::EXTERNAL_BLOCK] === true)
+		{
+			echo HTMLWidget::EXTERNAL_START_BLOCK_HTML_TAG;
+		}
+	}
+	
+	/**
+	 * 
+	 */
+	public static function printEndBlock($htmlArgs)
+	{
+		if (isset($htmlArgs[HTMLWidget::EXTERNAL_BLOCK])
+			&& $htmlArgs[HTMLWidget::EXTERNAL_BLOCK] === true)
+		{
+			echo HTMLWidget::EXTERNAL_END_BLOCK_HTML_TAG;
+		}
+	}
+}
\ No newline at end of file
diff --git a/application/widgets/html/TextareaWidget.php b/application/widgets/html/TextareaWidget.php
new file mode 100644
index 000000000..ffb9e538d
--- /dev/null
+++ b/application/widgets/html/TextareaWidget.php
@@ -0,0 +1,27 @@
+<?php
+
+/**
+ * It exends the Widget class to represent an HTML textarea
+ */
+class TextareaWidget extends HTMLWidget
+{
+	const TEXT = 'text'; // 
+	const ROWS = 'rows'; // 
+	const COLS = 'cols'; // 
+	
+	/**
+	 * 
+	 */
+	protected function setText($text)
+	{
+		$this->_args[TextareaWidget::TEXT] = $text;
+	}
+	
+	/**
+	 * 
+	 */
+	protected function loadTextareaView()
+	{
+		$this->view('widgets/textarea', $this->_args);
+	}
+}
\ No newline at end of file
diff --git a/application/widgets/html/TextfieldWidget.php b/application/widgets/html/TextfieldWidget.php
new file mode 100644
index 000000000..e5ad146c9
--- /dev/null
+++ b/application/widgets/html/TextfieldWidget.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * It exends the Widget class to represent an HTML textarea
+ */
+class TextfieldWidget extends HTMLWidget
+{
+	const VALUE = 'text'; // 
+	const SIZE = 'size'; // 
+	
+	/**
+	 * 
+	 */
+	protected function setValue($value)
+	{
+		$this->_args[TextfieldWidget::VALUE] = $value;
+	}
+	
+	/**
+	 * 
+	 */
+	protected function loadTextfieldView()
+	{
+		$this->view('widgets/textfield', $this->_args);
+	}
+}
\ No newline at end of file
diff --git a/application/widgets/udf/CheckboxWidgetUDF.php b/application/widgets/udf/CheckboxWidgetUDF.php
new file mode 100644
index 000000000..096a7a737
--- /dev/null
+++ b/application/widgets/udf/CheckboxWidgetUDF.php
@@ -0,0 +1,17 @@
+<?php
+
+/**
+ * 
+ */
+class CheckboxWidgetUDF extends CheckboxWidget
+{
+	/**
+	 * 
+	 */
+	public function render()
+	{
+		$this->loadCheckboxView();
+		
+		echo $this->content();
+    }
+}
\ No newline at end of file
diff --git a/application/widgets/udf/DropdownWidgetUDF.php b/application/widgets/udf/DropdownWidgetUDF.php
new file mode 100644
index 000000000..46a3f9733
--- /dev/null
+++ b/application/widgets/udf/DropdownWidgetUDF.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * 
+ */
+class DropdownWidgetUDF extends DropdownWidget
+{
+	/**
+	 * 
+	 */
+	public function render($parameters)
+	{
+		$tmpElements = array();
+		
+		// 
+		foreach($parameters as $parameter)
+		{
+			// 
+			if ((is_array($parameter) && count($parameter) == 2)
+				|| (is_string($parameter) || is_numeric($parameter))
+				|| (is_object($parameter) && isset($parameter->{PARENT::ID_FIELD}) && isset($parameter->{PARENT::DESCRIPTION_FIELD})))
+			{
+				$element = new stdClass(); // 
+				// 
+				if (is_array($parameter) && count($parameter) == 2)
+				{
+					$element->{PARENT::ID_FIELD} = $parameter[0]; // 
+					$element->{PARENT::DESCRIPTION_FIELD} = $parameter[1]; // 
+				}
+				// 
+				else if (is_string($parameter) || is_numeric($parameter))
+				{
+					$element->{PARENT::ID_FIELD} = $parameter; // 
+					$element->{PARENT::DESCRIPTION_FIELD} = $parameter; // 
+				}
+				// 
+				else if (is_object($parameter) && isset($parameter->{PARENT::ID_FIELD}) && isset($parameter->{PARENT::DESCRIPTION_FIELD}))
+				{
+					$element->{PARENT::ID_FIELD} = $parameter->{PARENT::ID_FIELD}; // 
+					$element->{PARENT::DESCRIPTION_FIELD} = $parameter->{PARENT::DESCRIPTION_FIELD}; // 
+				}
+				
+				array_push($tmpElements, $element); // 
+			}
+		}
+		
+		$this->setElementsArray(
+			success($tmpElements),
+			true,
+			$this->_args[HTMLWidget::HTML_ARG_NAME][HTMLWidget::PLACEHOLDER],
+			'No data found for this UDF'
+		);
+		
+		$this->loadDropDownView();
+		
+		echo $this->content();
+    }
+}
\ No newline at end of file
diff --git a/application/widgets/udf/TextareaWidgetUDF.php b/application/widgets/udf/TextareaWidgetUDF.php
new file mode 100644
index 000000000..d64015190
--- /dev/null
+++ b/application/widgets/udf/TextareaWidgetUDF.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * 
+ */
+class TextareaWidgetUDF extends TextareaWidget
+{
+	/**
+	 * 
+	 */
+	public function render($parameters)
+	{
+		if ($parameters != null)
+		{
+			$this->setText($parameters);
+		}
+		else
+		{
+			$this->setText('');
+		}
+		
+		$this->loadTextareaView();
+		
+		echo $this->content();
+    }
+}
\ No newline at end of file
diff --git a/application/widgets/udf/TextfieldWidgetUDF.php b/application/widgets/udf/TextfieldWidgetUDF.php
new file mode 100644
index 000000000..2d78b0d1a
--- /dev/null
+++ b/application/widgets/udf/TextfieldWidgetUDF.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * 
+ */
+class TextfieldWidgetUDF extends TextfieldWidget
+{
+	/**
+	 * 
+	 */
+	public function render($parameters)
+	{
+		if ($parameters != null)
+		{
+			$this->setValue($parameters);
+		}
+		else
+		{
+			$this->setValue('');
+		}
+		
+		$this->loadTextfieldView();
+		
+		echo $this->content();
+    }
+}
\ No newline at end of file
diff --git a/application/widgets/UDFWidget.php b/application/widgets/udf/UDFWidget.php
similarity index 64%
rename from application/widgets/UDFWidget.php
rename to application/widgets/udf/UDFWidget.php
index 4f847c023..9168c86da 100644
--- a/application/widgets/UDFWidget.php
+++ b/application/widgets/udf/UDFWidget.php
@@ -3,11 +3,10 @@
 /**
  * 
  */
-class UDFWidget extends UDFWidgetTpl
+class UDFWidget extends HTMLWidget
 {
 	const NAME = 'name';
 	const TYPE = 'type';
-	const REQUIRED = 'udf-required';
 	const VALIDATION = 'validation';
 	const LIST_VALUES = 'listValues';
 	const REGEX_LANGUAGE = 'js';
@@ -16,12 +15,12 @@ class UDFWidget extends UDFWidgetTpl
 	
     public function display($widgetData)
 	{
-		$schema = $widgetData[UDFWidgetTpl::SCHEMA_ARG_NAME];
-		$table = $widgetData[UDFWidgetTpl::TABLE_ARG_NAME];
+		$schema = $widgetData[UDFLib::SCHEMA_ARG_NAME];
+		$table = $widgetData[UDFLib::TABLE_ARG_NAME];
 		
-		if (isset($widgetData[UDFWidgetTpl::FIELD_ARG_NAME]))
+		if (isset($widgetData[UDFLib::FIELD_ARG_NAME]))
 		{
-			$field = $widgetData[UDFWidgetTpl::FIELD_ARG_NAME];
+			$field = $widgetData[UDFLib::FIELD_ARG_NAME];
 		}
 		
 		$udfResults = $this->_loadUDF($schema, $table);
@@ -105,8 +104,8 @@ class UDFWidget extends UDFWidgetTpl
      */
     private function _setNameAndId($jsonSchema)
     {
-		$this->_args[Widget::HTML_ARG_NAME][Widget::HTML_ID] = $jsonSchema->{UDFWidget::NAME};
-		$this->_args[Widget::HTML_ARG_NAME][Widget::HTML_NAME] = $jsonSchema->{UDFWidget::NAME};
+		$this->_args[HTMLWidget::HTML_ARG_NAME][HTMLWidget::HTML_ID] = $jsonSchema->{UDFWidget::NAME};
+		$this->_args[HTMLWidget::HTML_ARG_NAME][HTMLWidget::HTML_NAME] = $jsonSchema->{UDFWidget::NAME};
     }
     
     /**
@@ -210,10 +209,10 @@ class UDFWidget extends UDFWidgetTpl
      */
 	private function _renderDropdown($jsonSchema, $multiple = false)
 	{
-		if (isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME])
-			&& isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
+		if (isset($this->_args[UDFLib::UDFS_ARG_NAME])
+			&& isset($this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
 		{
-			$this->_args[DropdownWidget::SELECTED_ELEMENT] = $this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
+			$this->_args[DropdownWidget::SELECTED_ELEMENT] = $this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
 		}
 		else
 		{
@@ -254,10 +253,10 @@ class UDFWidget extends UDFWidgetTpl
 		$textareaUDF = new TextareaWidgetUDF($this->_name, $this->_args);
 		$text = null;
 		
-		if (isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME])
-			&& isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
+		if (isset($this->_args[UDFLib::UDFS_ARG_NAME])
+			&& isset($this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
 		{
-			$text = $this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
+			$text = $this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
 		}
 		
 		$textareaUDF->render($text);
@@ -271,10 +270,10 @@ class UDFWidget extends UDFWidgetTpl
 		$textareaUDF = new TextfieldWidgetUDF($this->_name, $this->_args);
 		$text = null;
 		
-		if (isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME])
-			&& isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
+		if (isset($this->_args[UDFLib::UDFS_ARG_NAME])
+			&& isset($this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
 		{
-			$text = $this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
+			$text = $this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
 		}
 		
 		$textareaUDF->render($text);
@@ -285,14 +284,14 @@ class UDFWidget extends UDFWidgetTpl
      */
 	private function _renderCheckbox($jsonSchema)
 	{
-		if (isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME])
-			&& isset($this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
+		if (isset($this->_args[UDFLib::UDFS_ARG_NAME])
+			&& isset($this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}]))
 		{
-			$this->_args[CheckboxWidget::VALUE_FIELD] = $this->_args[UDFWidgetTpl::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
+			$this->_args[CheckboxWidget::VALUE_FIELD] = $this->_args[UDFLib::UDFS_ARG_NAME][$jsonSchema->{UDFWidget::NAME}];
 		}
 		else
 		{
-			$this->_args[CheckboxWidget::VALUE_FIELD] = Widget::HTML_DEFAULT_VALUE;
+			$this->_args[CheckboxWidget::VALUE_FIELD] = HTMLWidget::HTML_DEFAULT_VALUE;
 		}
 		
 		$checkboxWidgetUDF = new CheckboxWidgetUDF($this->_name, $this->_args);
@@ -306,73 +305,73 @@ class UDFWidget extends UDFWidgetTpl
     private function _setAttributesWithPhrases($jsonSchema)
     {
 		// Description, title and placeholder
-		if (isset($jsonSchema->{UDFWidgetTpl::LABEL})
-			|| isset($jsonSchema->{UDFWidgetTpl::TITLE})
-			|| isset($jsonSchema->{UDFWidgetTpl::PLACEHOLDER}))
+		if (isset($jsonSchema->{UDFLib::LABEL})
+			|| isset($jsonSchema->{UDFLib::TITLE})
+			|| isset($jsonSchema->{UDFLib::PLACEHOLDER}))
 		{
 			// 
 			$this->_ci->load->library('PhrasesLib');
 			
 			// 
-			if (isset($jsonSchema->{UDFWidgetTpl::LABEL}))
+			if (isset($jsonSchema->{UDFLib::LABEL}))
 			{
 				$tmpResult = $this->_ci->phraseslib->getPhrases(
 					UDFWidget::PHRASES_APP_NAME,
 					DEFAULT_LEHREINHEIT_SPRACHE,
-					$jsonSchema->{UDFWidgetTpl::LABEL},
+					$jsonSchema->{UDFLib::LABEL},
 					null,
 					null,
 					'no'
 				);
 				if (hasData($tmpResult))
 				{
-					$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::LABEL] = $tmpResult->retval[0]->text;
+					$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::LABEL] = $tmpResult->retval[0]->text;
 				}
 				else
 				{
-					$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::LABEL] = null;
+					$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::LABEL] = null;
 				}
 			}
 			
 			// 
-			if (isset($jsonSchema->{UDFWidgetTpl::TITLE}))
+			if (isset($jsonSchema->{UDFLib::TITLE}))
 			{
 				$tmpResult = $this->_ci->phraseslib->getPhrases(
 					UDFWidget::PHRASES_APP_NAME,
 					DEFAULT_LEHREINHEIT_SPRACHE,
-					$jsonSchema->{UDFWidgetTpl::TITLE},
+					$jsonSchema->{UDFLib::TITLE},
 					null,
 					null,
 					'no'
 				);
 				if (hasData($tmpResult))
 				{
-					$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::TITLE] = $tmpResult->retval[0]->text;
+					$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::TITLE] = $tmpResult->retval[0]->text;
 				}
 				else
 				{
-					$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::TITLE] = null;
+					$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::TITLE] = null;
 				}
 			}
 			
 			// 
-			if (isset($jsonSchema->{UDFWidgetTpl::PLACEHOLDER}))
+			if (isset($jsonSchema->{UDFLib::PLACEHOLDER}))
 			{
 				$tmpResult = $this->_ci->phraseslib->getPhrases(
 					UDFWidget::PHRASES_APP_NAME,
 					DEFAULT_LEHREINHEIT_SPRACHE,
-					$jsonSchema->{UDFWidgetTpl::PLACEHOLDER},
+					$jsonSchema->{UDFLib::PLACEHOLDER},
 					null,
 					null,
 					'no'
 				);
 				if (hasData($tmpResult))
 				{
-					$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::PLACEHOLDER] = $tmpResult->retval[0]->text;
+					$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::PLACEHOLDER] = $tmpResult->retval[0]->text;
 				}
 				else
 				{
-					$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::PLACEHOLDER] = null;
+					$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::PLACEHOLDER] = null;
 				}
 			}
 		}
@@ -384,38 +383,38 @@ class UDFWidget extends UDFWidgetTpl
     private function _setValidationAttributes($jsonSchema)
     {
 		// Validation
-		$this->_args[Widget::HTML_ARG_NAME][UDFWidget::REQUIRED] = null;
-		$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::REGEX] = null;
-		$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::MAX_VALUE] = null;
-		$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::MIN_VALUE] = null;
+		$this->_args[HTMLWidget::HTML_ARG_NAME][UDFWidget::REQUIRED] = null;
+		$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::REGEX] = null;
+		$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::MAX_VALUE] = null;
+		$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::MIN_VALUE] = null;
 		
 		if (isset($jsonSchema->validation))
 		{
-			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::REGEX})
-				&& is_array($jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::REGEX}))
+			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::REGEX})
+				&& is_array($jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::REGEX}))
 			{
-				foreach($jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::REGEX} as $regex)
+				foreach($jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::REGEX} as $regex)
 				{
 					if ($regex->language === UDFWidget::REGEX_LANGUAGE)
 					{
-						$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::REGEX] = $regex->expression;
+						$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::REGEX] = $regex->expression;
 					}
 				}
 			}
 			
-			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::REQUIRED}))
+			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::REQUIRED}))
 			{
-				$this->_args[Widget::HTML_ARG_NAME][UDFWidget::REQUIRED] = $jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::REQUIRED};
+				$this->_args[HTMLWidget::HTML_ARG_NAME][UDFWidget::REQUIRED] = $jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::REQUIRED};
 			}
 			
-			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::MAX_VALUE}))
+			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::MAX_VALUE}))
 			{
-				$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::MAX_VALUE] = $jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::MAX_VALUE};
+				$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::MAX_VALUE] = $jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::MAX_VALUE};
 			}
 			
-			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::MIN_VALUE}))
+			if (isset($jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::MIN_VALUE}))
 			{
-				$this->_args[Widget::HTML_ARG_NAME][UDFWidgetTpl::MIN_VALUE] = $jsonSchema->{UDFWidget::VALIDATION}->{UDFWidgetTpl::MIN_VALUE};
+				$this->_args[HTMLWidget::HTML_ARG_NAME][UDFLib::MIN_VALUE] = $jsonSchema->{UDFWidget::VALIDATION}->{UDFLib::MIN_VALUE};
 			}
 		}
 	}