diff -r 5e7a0fedabdf -r 877f952ae2bd web/lib/Zend/View/Helper/HeadScript.php
--- a/web/lib/Zend/View/Helper/HeadScript.php	Thu Mar 21 17:31:31 2013 +0100
+++ b/web/lib/Zend/View/Helper/HeadScript.php	Thu Mar 21 19:50:53 2013 +0100
@@ -15,8 +15,8 @@
  * @category   Zend
  * @package    Zend_View
  * @subpackage Helper
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
- * @version    $Id: HeadScript.php 20363 2010-01-17 22:55:25Z mabe $
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @version    $Id: HeadScript.php 24960 2012-06-15 14:09:34Z adamlundrigan $
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
@@ -29,7 +29,7 @@
  * @uses       Zend_View_Helper_Placeholder_Container_Standalone
  * @package    Zend_View
  * @subpackage Helper
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_View_Helper_HeadScript extends Zend_View_Helper_Placeholder_Container_Standalone
@@ -245,7 +245,7 @@
                     break;
                 case 'file':
                 default:
-                    if (!$this->_isDuplicate($content)) {
+                    if (!$this->_isDuplicate($content) || $action=='set') {
                         $attrs['src'] = $content;
                         $item = $this->createData($type, $attrs);
                         if ('offsetSet' == $action) {
@@ -371,7 +371,6 @@
             throw $e;
         }
 
-        $this->_isValid($value);
         return $this->getContainer()->offsetSet($index, $value);
     }
 
@@ -411,8 +410,8 @@
         $attrString = '';
         if (!empty($item->attributes)) {
             foreach ($item->attributes as $key => $value) {
-                if (!$this->arbitraryAttributesAllowed()
-                    && !in_array($key, $this->_optionalAttributes))
+                if ((!$this->arbitraryAttributesAllowed() && !in_array($key, $this->_optionalAttributes))
+                    || in_array($key, array('conditional', 'noescape')))
                 {
                     continue;
                 }
@@ -423,10 +422,24 @@
             }
         }
 
+        $addScriptEscape = !(isset($item->attributes['noescape']) && filter_var($item->attributes['noescape'], FILTER_VALIDATE_BOOLEAN));
+
         $type = ($this->_autoEscape) ? $this->_escape($item->type) : $item->type;
         $html  = '<script type="' . $type . '"' . $attrString . '>';
         if (!empty($item->source)) {
-              $html .= PHP_EOL . $indent . '    ' . $escapeStart . PHP_EOL . $item->source . $indent . '    ' . $escapeEnd . PHP_EOL . $indent;
+            $html .= PHP_EOL ;
+
+            if ($addScriptEscape) {
+                $html .= $indent . '    ' . $escapeStart . PHP_EOL;
+            }
+
+            $html .= $indent . '    ' . $item->source;
+
+            if ($addScriptEscape) {
+                $html .= $indent . '    ' . $escapeEnd . PHP_EOL;
+            }
+
+            $html .= $indent;
         }
         $html .= '</script>';