halcyon/widgets/side_firefox_addon.php

<div class="side_widget with_button side_widgets_footer" id="widget_ffdl" style="display:none">
<div class="form_title">
<h2><?=_('Firefox Extension')?></h2>
<a href="javascript:void(0)" class="headerbtn" id="hide_ffdl"><?=_('HIDE')?></a>
</div>
<?=_('Halcyon does now have a new, free extension for the Firefox browser which can replace all Twitter Tweet buttons with Halcyon Toot buttons so that you can easily share all content on your favorite social network!')?>
<center><br/>
<button onclick="window.open('https://addons.mozilla.org/addon/halcyon-share/')" class="halcyon_button">
<span><?=_('Download it!')?></span>
</button>
</center>
</div>