I want to delete **JCaption** from head, jquery and jcaption file i deactivated with following methods:

```
unset($doc->_scripts[JURI::root(true) . '/media/jui/js/jquery.min.js']);
unset($doc->_scripts[JURI::root(true) . '/media/jui/js/jquery-noconflict.js']);
unset($doc->_scripts[JURI::root(true) . '/media/jui/js/jquery-migrate.min.js']);
unset($doc->_scripts[JURI::root(true) . '/media/system/js/caption.js']);

```

To delete jcaption on previous versions where mootools in using is it's needed:

```
$this->_script = preg_replace('%window\.addEvent\(\'load\',\s*function\(\)\s*{\s*new\s*JCaption\(\'img.caption\'\);\s*}\);\s*%', '', $this->_script);

```

I tried also so to delete it on jquery but i don't have with *preg\_replace()* experience, what's to do to delete JCatpion from head?

My code:

```
$this->_script = preg_replace('%jQuery\(window\)\.on(\'load\',\s*function\(\)\s*{\s*new\s*JCaption\(\'img.caption\');\s*}\);\s*%', '', $this->_script);

```