How To Create Facebook Like Pop Up Box In Blogger

Step 1: 

Copy this code and Paste below after  </body>  text.

 <style type='text/css'>
#haakblogFBpop {
position:fixed !important;
position:absolute;
top:-1000px;
left:50%;
margin:0px 0px 0px -182px;
width:300px;
height:auto;
padding:16px;
background:#FEFEFE;font:normal Dosis, Georgia, Serif;
color:#111;
border:2px solid #333;
-webkit-box-shadow:0px 1px 2px rgba(0,0,0,0.4);
-moz-box-shadow:0px 1px 2px rgba(0,0,0,0.4);
box-shadow:0px 1px 2px rgba(0,0,0,0.4);
-webkit-border-radius:10px;
-moz-border-radius:10px;
border-radius:10px;
}
#haakblogFBpop a.haakblogclose {
position:absolute;
top:-10px;
right:-10px;
background:#fff;
font:bold 16px Arial, Sans-Serif;
text-decoration:none;
line-height:22px;
width:22px;
text-align:center;
color:#000000;
border:2px solid #333;
-webkit-box-shadow:0px 1px 2px rgba(0,0,0,0.4);
-moz-box-shadow:0px 1px 2px rgba(0,0,0,0.4);
box-shadow:0px 1px 2px rgba(0,0,0,0.4);
-webkit-border-radius:22px;
-moz-border-radius:22px;
border-radius:25px;
cursor:pointer;
}
</style>
 <script src='http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js' type='text/javascript'/>
<script type='text/javascript'>
$(window).bind(&quot;load&quot;, function() {
// Animate Top
$(&#39;#haakblogFBpop&#39;).animate({top:&quot;150px&quot;}, 1000);
// Widget by www.haakblog.com
$(&#39;a.haakblogclose&#39;).click(function() {
$(this).parent().fadeOut();
return false;
});
});
</script>
<div id='haakblogFBpop'>
<!-- Widget by www.haakblog.com Start -->
<center>
<b>Don&#39;t Forget To Join US Our Community</b></center>
<center>
<iframe allowtransparency='true' frameborder='0' scrolling='no' src='//www.facebook.com/plugins/likebox.php?href=https%3A%2F%2Fwww.facebook.com%2Fpcomputercenter&amp;width=300&amp;height=258&amp;show_faces=true&amp;colorscheme=light&amp;stream=false&amp;show_border=false&amp;header=false&amp;appId=196282097100252' style='border:none; overflow:hidden; width:300px; height:258px;'/>
</center>
<!-- Widget by www.haakblog.com End -->
<a class='haakblogclose' href='#'>&#215;</a>
<center style='float:right; margin-right:10px;'>
<span style='font-size:xx-small; color:#000; text-decoration:none;'></span>
<a href="#" rel="dofollow" target="_blank" title=""><img src="#" alt="" border="0" style="position: fixed; bottom: 10%; right: 0%;" /></a><a href='#' style='font-size:xx-small; color:#3B78CD; text-decoration:none;' target='_blank'>PCComputercenter</a></center>
</div>

Step 2:

Replace pcomputercenter with your facebook page name which is highlighted in Green color.