how can i add custom social network share button?

hello
i want to add custom social network button for vkontakte
here is the code
HTML:
<!-- Put this script tag to the <head> of your page -->
<script type="text/javascript" src="http://vkontakte.ru/js/api/share.js?10" charset="windows-1251"></script>

<!-- Put this script tag to the place, where the Share button will be -->
<script type="text/javascript"><!--
document.write(VK.Share.button(false,{type: "button", text: "Сохранить"}));
--></script>
where can a add this ?
i want this button with facebook and twitter button
 
here is the code of share_page template
Code:
<xen:if hascontent="true">
    <xen:require css="share_page.css" />

    <div class="sharePage">
        <h3 class="textHeading larger">{xen:phrase share_this_page}</h3>
        <xen:contentcheck>
            <xen:if is="{$xenOptions.tweet.enabled}">
                <div class="tweet shareControl">
                    <a href="http://twitter.com/share" class="twitter-share-button"
                        data-count="horizontal"
                        data-lang="{xen:helper twitterLang, $visitorLanguage.language_code}"
                        data-url="{$url}"
                        {xen:if {$thread.title}, 'data-text="{$thread.title}"'}
                        {xen:if {$xenOptions.tweet.via}, 'data-via="{$xenOptions.tweet.via}"'}
                        {xen:if {$xenOptions.tweet.related}, 'data-related="{$xenOptions.tweet.related}"'}>{xen:phrase tweet}</a>
                </div>
            </xen:if>
            <xen:if is="{$xenOptions.facebookLike}">
                <div class="facebookLike shareControl">
                    <xen:container var="$facebookSdk">1</xen:container>
                    <fb:like href="{$url}" show_faces="true" width="500" action="{$xenOptions.facebookLikeAction}" font="trebuchet ms" colorscheme="@fbColorScheme"></fb:like>
                </div>
            </xen:if>
        </xen:contentcheck>
    </div>
</xen:if>
where exactly can i put that code?
Code:
<!-- Put this script tag to the place, where the Share button will be -->
<script type="text/javascript"><!--
document.write(VK.Share.button(false,{type: "button", text: "Сохранить"}));
--></script>
 
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