add review form and list and toolbar into tab product view page :Magento

add following code into block -tabs in catalog.xml-><product_view handler>

<block type="review/form" name="product.review.form" as="review_form"/>
        <action method="addTab" translate="title" module="review"><alias>product_additional_data</alias> <title>Reviews</title><block>review/product_view_list</block><template>review/product/view/list.phtml</template></action>    

then 

replace

<?php // echo $this->getChildHtml('review_form') ?> and put below code

 <?php
    $layout = Mage::getSingleton('core/layout');

echo $layout->getBlock('content')->getChild('product.info')->getChild('info_tabs')->getChild('review_form')->toHtml(); ?>

in review/product/list.phtml......file 

and then below code to review.xml file

<reference name="product.info.tabs">
            <block type="page/html_pager" name="product_review_list.toolbar" as="toolbar"/>
            <action method="addTab" translate="title" module="review">
                <alias>avis</alias>
                <title>Commentaires</title>
                <block>review/product_view_list</block>
                <template>review/product/view/list.phtml</template>
            </action>
</reference>