What is causing this error? jquery.php? version = 1.3.2 & gzip = 0 & farfuture = 0: 1

I'm having trouble identifying this error that appears on one of the pages of a website:

  

Uncaught SyntaxError: Unexpected identifier   jquery.php? version = 1.3.2 & gzip = 0 & farfuture = 0: 1

I did some research and it looks like it's related to Fututre Expire header , but I also think it might be the JQuery version being outdated. The site was created through Joomla. If anyone can help me identify the problem, I am very grateful.

Here is the jquery.php where the error came from:

<?php
// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

jimport( 'joomla.plugin.plugin' );

/**
* jQuery loading plugin
*
* @version      1.0
*/

//TODO: Create translation ini files

class plgSystemJquery extends JPlugin {

function plgSystemJquery(& $subject, $config) {
    parent::__construct($subject, $config);
}


function _getPath() {
    $mainframe =& JFactory::getApplication();

    $gzip = $this->params->get('gzip', 0);
    $farfuture = $this->params->get('farfuture', 0);
    $version = $this->params->get('version','1.3.2');

    $path = 'plugins/system/jquery/';

//      if (!$gzip && !$farfuture) {
 //         $file = 'jquery-'.$version.'.min.js';
 //     } else {
        $file = 'jquery.php?version='.$version.'&amp;gzip='.$gzip.'&amp;farfuture='.$farfuture;         
//      }
// Prepend ../ if we're in the backend
        if($mainframe->isAdmin()) {
        $path = '../'.$path;
    }

    return $path.$file;

}

function onAfterDispatch() {

    $doc =& JFactory::getDocument();

    if ($doc->getType() == 'html' && $this->params->get('bottomscript', 0) == 1) {
        $version = $this->params->get('version','1.3.2');
        $js = '<script type="text/javascript">if (typeof(jQuery) == "undefined" || (typeof(jQuery) != "undefined" && jQuery.fn.jquery != "'.$version.'") )
            document.write(unescape("%3Cscript src=\''.self::_getPath().' \' type=\'text/javascript\'%3E%3C/script%3E"));</script>';
        JResponse::appendBody($js);

        $js = '<script type="text/javascript">$jquery = jQuery.noConflict();</script>';
        JResponse::appendBody($js);

    }

    if ($doc->getType() == 'html' && $this->params->get('bottomscript', 0) == 0) {

        // Add jquery to the scripts
        $doc->addScript(self::_getPath());

        // Get head data
        $headdata = $doc->getHeadData();

        // Take the scripts part
        $scripts = $headdata['scripts'];

        // Reverse the array so we can pick jquery easily
        $revscripts = array_reverse($scripts,true);

        // Take the jquery field
        $keys = array_keys($revscripts);
        $key = $keys[0];
        $jqueryscript = $revscripts[$key];

        // Reconstruct the scripts array with jquery as first
        $newscripts[$key]  = $jqueryscript;
        foreach ($scripts as $path=>$type) {
            $newscripts[$path] = $type;
        }

        // Set the new head data
        $doc->setHeadData (array('scripts'=>$newscripts));

    }

}

}

Code modifications:

class plgSystemJquery extends JPlugin {

function plgSystemJquery(&$subject, $config) {
    parent::__construct($subject, $config);
}

function _getPath() {
    $mainframe =& JFactory::getApplication();

      if(!JFactory::getApplication()->get('jquery')){
 JFactory::getApplication()->set('jquery',true);
 $mainframe = JFactory::getDocument();
 $mainframe->addScript(JURI::root() . "templates/movimentoeleclerc/scripts/jquery.js");

}