Override of Mage_GoogleAnalytics_Block_Ga for two tracking code at the same time. Create a custom variable on magento backend called 'google_analytics_code_two' to insert the second code

Mage_GoogleAnalytics_Block_Ga

<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magento.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magento.com for more information.
 *
 * @category    Mage
 * @package     Mage_GoogleAnalytics
 * @copyright  Copyright (c) 2006-2014 X.commerce, Inc. (http://www.magento.com)
 * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


/**
 * GoogleAnalitics Page Block
 *
 * @category   Mage
 * @package    Mage_GoogleAnalytics
 * @author     Magento Core Team <core@magentocommerce.com>
 */
class Mage_GoogleAnalytics_Block_Ga extends Mage_Core_Block_Template
{
    /**
     * @deprecated after 1.4.1.1
     * @see self::_getOrdersTrackingCode()
     * @return string
     */
    public function getQuoteOrdersHtml()
    {
        return '';
    }

    /**
     * @deprecated after 1.4.1.1
     * self::_getOrdersTrackingCode()
     * @return string
     */
    public function getOrderHtml()
    {
        return '';
    }

    /**
     * @deprecated after 1.4.1.1
     * @see _toHtml()
     * @return string
     */
    public function getAccount()
    {
        return '';
    }

    /**
     * Get a specific page name (may be customized via layout)
     *
     * @return string|null
     */
    public function getPageName()
    {
        return $this->_getData('page_name');
    }

    /**
     * Render regular page tracking javascript code
     * The custom "page name" may be set from layout or somewhere else. It must start from slash.
     *
     * @param string $accountId
     * @return string
     */
    protected function _getPageTrackingCode($accountId)
    {
        if ($this->helper('googleanalytics')->isUseUniversalAnalytics()) {
            return $this->_getPageTrackingCodeUniversal($accountId);
        } else {
            return $this->_getPageTrackingCodeAnalytics($accountId);
        }
    }

    /**
     * Render regular page tracking javascript code
     * The custom "page name" may be set from layout or somewhere else. It must start from slash.
     *
     * @param string $accountId
     * @return string
     */
    protected function _getPageTrackingCodeUniversal($accountId)
    {
        $_code = Mage::getModel('core/variable')
            ->loadByCode('google_analytics_code_two')
            ->getValue('text');

        return "
ga('create', '{$this->jsQuoteEscape($accountId)}', 'auto' );
ga('create', '{$_code}', 'auto', {'name': 'newTracker'});
" . $this->_getAnonymizationCode() . "
ga('send', 'pageview');
ga('newTracker.send', 'pageview');
";
    }

    /**
     * Render regular page tracking javascript code
     * The custom "page name" may be set from layout or somewhere else. It must start from slash.
     *
     * @link http://code.google.com/apis/analytics/docs/gaJS/gaJSApiBasicConfiguration.html#_gat.GA_Tracker_._trackPageview
     * @link http://code.google.com/apis/analytics/docs/gaJS/gaJSApi_gaq.html
     * @param string $accountId
     * @return string
     */
    protected function _getPageTrackingCodeAnalytics($accountId)
    {
        $pageName   = trim($this->getPageName());
        $optPageURL = '';
        if ($pageName && preg_match('/^\/.*/i', $pageName)) {
            $optPageURL = ", '{$this->jsQuoteEscape($pageName)}'";
        }
        return "
_gaq.push(['_setAccount', '{$this->jsQuoteEscape($accountId)}']);
" . $this->_getAnonymizationCode() . "
_gaq.push(['_trackPageview'{$optPageURL}]);
";
    }

    /**
     * Render information about specified orders and their items
     *
     * @return string
     */
    protected function _getOrdersTrackingCode()
    {
        if ($this->helper('googleanalytics')->isUseUniversalAnalytics()) {
            return $this->_getOrdersTrackingCodeUniversal();
        } else {
            return $this->_getOrdersTrackingCodeAnalytics();
        }
    }

    /**
     * Render information about specified orders and their items
     *
     * @return string
     */
    protected function _getOrdersTrackingCodeUniversal()
    {
        $orderIds = $this->getOrderIds();
        if (empty($orderIds) || !is_array($orderIds)) {
            return;
        }
        $collection = Mage::getResourceModel('sales/order_collection')
            ->addFieldToFilter('entity_id', array('in' => $orderIds));
        $result = array();
        $result[] = "ga('require', 'ecommerce')";
        $result[] = "ga('newTracker.require', 'ecommerce')";
        foreach ($collection as $order) {
            $result[] = sprintf("ga('ecommerce:addTransaction', {
'id': '%s',
'affiliation': '%s',
'revenue': '%s',
'tax': '%s',
'shipping': '%s'
});",
                $order->getIncrementId(),
                $this->jsQuoteEscape(Mage::app()->getStore()->getFrontendName()),
                $order->getBaseGrandTotal(),
                $order->getBaseTaxAmount(),
                $order->getBaseShippingAmount()
            );
            $result[] = sprintf("ga('newTracker.ecommerce:addTransaction', {
'id': '%s',
'affiliation': '%s',
'revenue': '%s',
'tax': '%s',
'shipping': '%s'
});",
                $order->getIncrementId(),
                $this->jsQuoteEscape(Mage::app()->getStore()->getFrontendName()),
                $order->getBaseGrandTotal(),
                $order->getBaseTaxAmount(),
                $order->getBaseShippingAmount()
            );
            foreach ($order->getAllVisibleItems() as $item) {
                $result[] = sprintf("ga('ecommerce:addItem', {
'id': '%s',
'sku': '%s',
'name': '%s',
'category': '%s',
'price': '%s',
'quantity': '%s'
});",
                    $order->getIncrementId(),
                    $this->jsQuoteEscape($item->getSku()),
                    $this->jsQuoteEscape($item->getName()),
                    null, // there is no "category" defined for the order item
                    $item->getBasePrice(),
                    $item->getQtyOrdered()
                );
                $result[] = sprintf("ga('newTracker.ecommerce:addItem', {
'id': '%s',
'sku': '%s',
'name': '%s',
'category': '%s',
'price': '%s',
'quantity': '%s'
});",
                    $order->getIncrementId(),
                    $this->jsQuoteEscape($item->getSku()),
                    $this->jsQuoteEscape($item->getName()),
                    null, // there is no "category" defined for the order item
                    $item->getBasePrice(),
                    $item->getQtyOrdered()
                );
            }
            $result[] = "ga('ecommerce:send');";
            $result[] = "ga('newTracker.ecommerce:send');";
        }
        return implode("\n", $result);
    }

    /**
     * Render information about specified orders and their items
     *
     * @link http://code.google.com/apis/analytics/docs/gaJS/gaJSApiEcommerce.html#_gat.GA_Tracker_._addTrans
     * @return string
     */
    protected function _getOrdersTrackingCodeAnalytics()
    {
        $orderIds = $this->getOrderIds();
        if (empty($orderIds) || !is_array($orderIds)) {
            return;
        }
        $collection = Mage::getResourceModel('sales/order_collection')
            ->addFieldToFilter('entity_id', array('in' => $orderIds));
        $result = array();
        foreach ($collection as $order) {
            if ($order->getIsVirtual()) {
                $address = $order->getBillingAddress();
            } else {
                $address = $order->getShippingAddress();
            }
            $result[] = sprintf("_gaq.push(['_addTrans', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s']);",
                $order->getIncrementId(),
                $this->jsQuoteEscape(Mage::app()->getStore()->getFrontendName()),
                $order->getBaseGrandTotal(),
                $order->getBaseTaxAmount(),
                $order->getBaseShippingAmount(),
                $this->jsQuoteEscape(Mage::helper('core')->escapeHtml($address->getCity())),
                $this->jsQuoteEscape(Mage::helper('core')->escapeHtml($address->getRegion())),
                $this->jsQuoteEscape(Mage::helper('core')->escapeHtml($address->getCountry()))
            );
            foreach ($order->getAllVisibleItems() as $item) {
                $result[] = sprintf("_gaq.push(['_addItem', '%s', '%s', '%s', '%s', '%s', '%s']);",
                    $order->getIncrementId(),
                    $this->jsQuoteEscape($item->getSku()), $this->jsQuoteEscape($item->getName()),
                    null, // there is no "category" defined for the order item
                    $item->getBasePrice(), $item->getQtyOrdered()
                );
            }
            $result[] = "_gaq.push(['_trackTrans']);";
        }
        return implode("\n", $result);
    }

    /**
     * Render IP anonymization code for page tracking javascript code
     *
     * @return string
     */
    protected function _getAnonymizationCode()
    {
        if (!Mage::helper('googleanalytics')->isIpAnonymizationEnabled()) {
            return '';
        }
        if ($this->helper('googleanalytics')->isUseUniversalAnalytics()) {
            return $this->_getAnonymizationCodeUniversal();
        } else {
            return $this->_getAnonymizationCodeAnalytics();
        }
    }

    /**
     * Render IP anonymization code for page tracking javascript universal analytics code
     *
     * @return string
     */
    protected function _getAnonymizationCodeUniversal()
    {
        return "ga('set', 'anonymizeIp', true);";
    }

    /**
     * Render IP anonymization code for page tracking javascript google analytics code
     *
     * @return string
     */
    protected function _getAnonymizationCodeAnalytics()
    {
        return "_gaq.push (['_gat._anonymizeIp']);";
    }

    /**
     * Render GA tracking scripts
     *
     * @return string
     */
    protected function _toHtml()
    {
        if (!Mage::helper('googleanalytics')->isGoogleAnalyticsAvailable()) {
            return '';
        }
        return parent::_toHtml();
    }
}