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1. Log in to your Blogger Dashboard.
2. Go to Layout and add a HTML/Javascript Widget.
3. Copy the following code and paste it into the widget.
<!-- floating share bar from www.learnatleisure.blogspot.com -->
<style type="text/css">
#pageshare {position:fixed; bottom:15%; margin-left:-71px; float:left; border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;background-color:#fff;padding:0 0 2px 0;z-index:10;}
#pageshare .sbutton {float:left;clear:both;/*bs-fsmsb*/margin:5px 5px 0 5px;}
</style>
<div id='pageshare' title="Get this from BloggerSentral.com">
<div class='sbutton' id='like' style='margin-left:8px;'>
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/all.js#xfbml=1";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
<div class="fb-like" data-send="false" data-layout="box_count" data-width="40" data-show-faces="false"></div>
</div>
<div class='sbutton' id='rt'>
<script src="http://tweetmeme.com/i/scripts/button.js" type='text/javascript'></script>
</div>
<div class='sbutton' id='su'>
<script src="http://www.stumbleupon.com/hostedbadge.php?s=5"></script>
</div>
<div class='sbutton' id='digg' style='margin-left:3px;width:48px'>
<script src='http://widgets.digg.com/buttons.js' type='text/javascript'></script>
<a class="DiggThisButton DiggMedium"></a>
</div>
<div class='sbutton' id='gplusone'>
<script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script>
<g:plusone size="tall"></g:plusone>
</div>
<div style="clear: both;font-size: 9px;text-align:center;">Get <a href="http://www.learnatleisure.blogspot.com/">This</a></div><!-- Do not remove this link -->
</div>
<!-- floating share bar by www.learnatleisure.blogspot.com End -->
4. Click Save. You are done. The next time you visit your blog, you will see the share bar in the right side of your blog.
You can add more sharing options using Addthis sharing bar. This will enable you to provide your visitors with more than 200 social sharing and bookmarking websites. The bar will look like the above mentioned, but it will contain more options. You need to replace the code in step 3 with the following:
<!-- AddThis Button brought to you by www.learnatleisure.blogspot.com BEGIN -->
<div class="addthis_toolbox addthis_floating_style addthis_counter_style" style="left:50px;top:50px;">
<a class="addthis_button_facebook_like" fb:like:layout="box_count"></a>
<a class="addthis_button_tweet" tw:count="vertical"></a>
<a class="addthis_button_google_plusone" g:plusone:size="tall"></a>
<a class="addthis_counter"></a>
</div>
<script type="text/javascript">var addthis_config = {"data_track_addressbar":true};</script>
<script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-51356f4c646f3551"></script>
<!-- AddThis Button brought to you by www.learnatleisure.blogspot.com END -->
To add more customized sharing gadgets, go to https://www.addthis.com/get/sharing and choose the one you like most. Enjoy blogging.