Tutorial: Cómo agregar una caja Pop-Up de Me Gusta de Facebook en Blogger

<style>

/*
ColorBox Core Style:
The following CSS is consistent between example themes and should not be altered.
*/
#colorbox, #cboxOverlay, #cboxWrapper{position:absolute; top:0; left:0; z-index:9999; overflow:hidden;}
#cboxOverlay{position:fixed; width:100%; height:100%;}
#cboxMiddleLeft, #cboxBottomLeft{clear:left;}
#cboxContent{position:relative;}
#cboxLoadedContent{overflow:auto;}
#cboxTitle{margin:0;}
#cboxLoadingOverlay, #cboxLoadingGraphic{position:absolute; top:0; left:0; width:100%;}
#cboxPrevious, #cboxNext, #cboxClose, #cboxSlideshow{cursor:pointer;}
.cboxPhoto{float:left; margin:auto; border:0; display:block;}
.cboxIframe{width:100%; height:100%; display:block; border:0;}
/*


User Style:
Change the following styles to modify the appearance of ColorBox. They are
ordered & tabbed in a way that represents the nesting of the generated HTML.
*/
#cboxOverlay{background:#000;opacity:0.5 !important;}
#colorbox{
box-shadow:0 0 15px rgba(0,0,0,0.4);
-moz-box-shadow:0 0 15px rgba(0,0,0,0.4);
-webkit-box-shadow:0 0 15px rgba(0,0,0,0.4);
}
#cboxTopLeft{width:14px; height:14px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) no-repeat 0 0;}
#cboxTopCenter{height:14px; background:url(http://1.bp.blogspot.com/-TcJGMnSfOC...600/border.png) repeat-x top left;}
#cboxTopRight{width:14px; height:14px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) no-repeat -36px 0;}
#cboxBottomLeft{width:14px; height:43px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) no-repeat 0 -32px;}
#cboxBottomCenter{height:43px; background:url(http://1.bp.blogspot.com/-TcJGMnSfOC...600/border.png) repeat-x bottom left;}
#cboxBottomRight{width:14px; height:43px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) no-repeat -36px -32px;}
#cboxMiddleLeft{width:14px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) repeat-y -175px 0;}
#cboxMiddleRight{width:14px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) repeat-y -211px 0;}
#cboxContent{background:#fff; overflow:visible;}
#cboxLoadedContent{margin-bottom:5px;}
#cboxLoadingOverlay{background:url(http://1.bp.blogspot.com/-PPvu-446sn...background.png) no-repeat center center;}
#cboxLoadingGraphic{background:url(http://1.bp.blogspot.com/-31strss_1-...00/loading.gif) no-repeat center center;}
#cboxTitle{position:absolute; bottom:-25px; left:0; text-align:center; width:100%; font-weight:bold; color:#7C7C7C;}
#cboxCurrent{position:absolute; bottom:-25px; left:58px; font-weight:bold; color:#7C7C7C;}
#cboxPrevious, #cboxNext, #cboxClose, #cboxSlideshow{position:absolute; bottom:-29px; background:url(http://1.bp.blogspot.com/-FiJ_Xz7txE...0/controls.png) no-repeat 0px 0px; width:23px; height:23px; text-indent:-9999px;}
#cboxPrevious{left:0px; background-position: -51px -25px;}
#cboxPrevious.hover{background-position:-51px 0px;}
#cboxNext{left:27px; background-position:-75px -25px;}
#cboxNext.hover{background-position:-75px 0px;}
#cboxClose{right:0; background-position:-100px -25px;}
#cboxClose.hover{background-position:-100px 0px;}
.cboxSlideshow_on #cboxSlideshow{background-position:-125px 0px; right:27px;}
.cboxSlideshow_on #cboxSlideshow.hover{background-position:-150px 0px;}
.cboxSlideshow_off #cboxSlideshow{background-position:-150px -25px; right:27px;}
.cboxSlideshow_off #cboxSlideshow.hover{background-position:-125px 0px;}
/*-----------------------------------------------------------------------------------*/
/* Facebook Likebox popup For Blogger
/*-----------------------------------------------------------------------------------*/
#subscribe {
font: 12px/1.2 Arial,Helvetica,san-serif; color:#666;
}
#subscribe a,
#subscribe a:hover,
#subscribe a:visited {
text-decoration:none;
}
.box-title {
color: #3B5998;
font-size: 20px !important;
font-weight: bold;
margin: 10px 0;
border:1px solid #ddd;
-moz-border-radius:6px;
-webkit-border-radius:6px;
border-radius:6px;
box-shadow: 5px 5px 5px #CCCCCC;
padding:10px;
line-height:25px; font-family:arial !important;
}
.box-tagline {
color: #999;
margin: 0;
text-align: center;
}
#subs-container {
padding: 35px 0 30px 0;
position: relative;
}
a:link, a:visited {
border:none;
}
.demo {
display:none;
}
</style>

<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'></script>
<script src="http://yourjavascript.com/11215013191/jquery.colorbox-min.js"></script>
<script type="text/javascript">
jQuery(document).ready(function(){
if (document.cookie.indexOf('visited=true') == -1) {
var fifteenDays = 1000*60*60*24*30;
var expires = new Date((new Date()).valueOf() + fifteenDays);
document.cookie = "visited=true;expires=" + expires.toUTCString();
$.colorbox({width:"400px", inline:true, href:"#subscribe"});
}
});
</script>
<!-- This contains the hidden content for inline calls -->

<div style='display:none'>
<div id='subscribe' style='padding:10px; background:#fff;'>
<h3 class="box-title">[COLOR="#0000FF"]Mantente en contacto con nosotros a través de Facebook. Sólo presiona el botón Me gusta[/COLOR] <center><p style="line-height:3px;" >▼</p></center></h3>
<center>

<iframe src="//www.facebook.com/plugins/likebox.php?href=[COLOR="#FF0000"]URL DE TU FACEBOOK[/COLOR]&amp;width=300&amp;colorscheme=light&amp;show_face s=true&amp;border_color=%23ffffff&amp;stream=false &amp;header=false&amp;height=258" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:300px; height:258px;" allowtransparency="true"></iframe>

</center>
</div>
</div>