diff --git a/com_ccex/site/ccex.php b/com_ccex/site/ccex.php
index 3136e97..3120ddc 100644
--- a/com_ccex/site/ccex.php
+++ b/com_ccex/site/ccex.php
@@ -2,7 +2,7 @@
 
 // No direct access
 ini_set('display_errors', true);
-error_reporting(E_ALL);
+error_reporting(E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED);
 defined('_JEXEC') or die('Restricted access');
 
 //sessions
diff --git a/com_ccex/site/helpers/cast.php b/com_ccex/site/helpers/cast.php
index 9e8c447..a5b671b 100644
--- a/com_ccex/site/helpers/cast.php
+++ b/com_ccex/site/helpers/cast.php
@@ -13,7 +13,7 @@ class CCExHelpersCast
      * @param object $sourceObject
      * @return object
      */
-    function cast($destination, $sourceObject) {
+    static function cast($destination, $sourceObject) {
         if (is_string($destination)) {
             $destination = new $destination();
         }
diff --git a/com_ccex/site/helpers/style.php b/com_ccex/site/helpers/style.php
index 4301677..72b404d 100644
--- a/com_ccex/site/helpers/style.php
+++ b/com_ccex/site/helpers/style.php
@@ -5,7 +5,7 @@
 
 class CCExHelpersStyle
 {
-    function load() {
+    static function load() {
         $document = JFactory::getDocument();
         
         //javascripts
diff --git a/com_ccex/site/helpers/tag.php b/com_ccex/site/helpers/tag.php
index b2f2594..70a2c12 100644
--- a/com_ccex/site/helpers/tag.php
+++ b/com_ccex/site/helpers/tag.php
@@ -5,7 +5,7 @@
 
 class CCExHelpersTag
 {
-    function formatCurrency($value) {
+    static function formatCurrency($value) {
         if ($value < 0.01 || $value > 99999999) {
             return sprintf('%.2e', $value);
         } else if (is_float($value)) {
@@ -15,15 +15,15 @@ function formatCurrency($value) {
         }
     }
     
-    function formatCurrencyWithSymbol($value, $symbol) {
+    static function formatCurrencyWithSymbol($value, $symbol) {
         return sprintf('%s%s', $symbol, CCExHelpersTag::formatCurrency($value));
     }
     
-    function formatWithSymbol($value, $symbol) {
+    static function formatWithSymbol($value, $symbol) {
         return sprintf('%s%s', $symbol, $value);
     }
     
-    function formatBoolean($boolean) {
+    static function formatBoolean($boolean) {
         if ($boolean) {
             return "Yes";
         } else {
diff --git a/com_ccex/site/helpers/view.php b/com_ccex/site/helpers/view.php
index ce533da..0bf7a96 100644
--- a/com_ccex/site/helpers/view.php
+++ b/com_ccex/site/helpers/view.php
@@ -5,7 +5,7 @@
 
 class CCExHelpersView
 {
-    function load($viewName, $layoutName = 'default', $viewFormat = 'html', $vars = null) {
+    static function load($viewName, $layoutName = 'default', $viewFormat = 'html', $vars = null) {
         
         // Get the application
         $app = JFactory::getApplication();
@@ -36,7 +36,7 @@ function load($viewName, $layoutName = 'default', $viewFormat = 'html', $vars =
         return $view;
     }
     
-    function getHtml($view, $layout, $item, $data) {
+    static function getHtml($view, $layout, $item, $data) {
         $objectView = CCExHelpersView::load($view, $layout, 'phtml');
         $objectView->$item = $data;
         
diff --git a/com_ccex/site/models/collection.php b/com_ccex/site/models/collection.php
index 5252649..495d941 100644
--- a/com_ccex/site/models/collection.php
+++ b/com_ccex/site/models/collection.php
@@ -229,7 +229,8 @@ public function intervalsWithoutLast() {
     }
     
     public function lastInterval() {
-        return CCExHelpersCast::cast('CCExModelsInterval', end($this->intervals()));
+        $intervals = $this->intervals();
+        return CCExHelpersCast::cast('CCExModelsInterval', end($intervals));
     }
     
     public function newInterval() {