Berikut code nya tinggal tambahkan saja di gadget HTML :

<script src="http://makingdifferent.github.com/blogger-widgets/[www.gj37765.blogspot.com]jquery.colorbox-min.js"></script>
<style type="text/css">
#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;
}
#cboxOverlay{
background:#000000;
opacity:0.5 !important;
}
#colorbox{
/*box-shadow*/
-webkit-box-shadow:0 0 15px rgba(0,0,0,0.4);
-moz-box-shadow:0 0 15px rgba(0,0,0,0.4);
box-shadow:0 0 15px rgba(0,0,0,0.4);
}
#cboxTopLeft{
width:14px;
height:14px;
background:url(http://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.png) no-repeat 0 0;
}
#cboxTopCenter{
height:14px;
background:url(http://2.bp.blogspot.com/-3KW95qDrjH0/TwRGYol22fI/AAAAAAAACM4/lCr80B0MD2U/s1600/%255Bwww.gj37765.blogspot.com%255Dborder.png) repeat-x top left;
}
#cboxTopRight{
width:14px;
height:14px;
background:url(http://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.png) no-repeat -36px 0;
}
#cboxBottomLeft{
width:14px;
height:43px;
background:url(http://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.png) no-repeat 0 -32px;
}
#cboxBottomCenter{
height:43px;
background:url(http://2.bp.blogspot.com/-3KW95qDrjH0/TwRGYol22fI/AAAAAAAACM4/lCr80B0MD2U/s1600/%255Bwww.gj37765.blogspot.com%255Dborder.png) repeat-x bottom left;
}
#cboxBottomRight{
width:14px;
height:43px;
background:url(http://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.png) no-repeat -36px -32px;
}
#cboxMiddleLeft{width:14px;background:url(http://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.png) repeat-y -175px 0;
}
#cboxMiddleRight{
width:14px;background:url(http://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.png) repeat-y -211px 0;
}
#cboxContent{
background:#fff;
overflow:visible;
}
#cboxLoadedContent{
margin-bottom:5px;
}
#cboxLoadingOverlay{background:url(http://3.bp.blogspot.com/-7VRvnW_MUSw/TwRGXjXjloI/AAAAAAAACM0/5K-J5jgkxo4/s1600/%255Bwww.gj37765.blogspot.com%255Dloadingbackground.png) no-repeat center center;
}
#cboxLoadingGraphic{background:url(http://3.bp.blogspot.com/-xjj51r2lm2M/TwRGaKezqHI/AAAAAAAACNI/lKX9_-YUUdY/s1600/%255Bwww.gj37765.blogspot.com%255Dloading.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://3.bp.blogspot.com/-UFvsMA0xw_s/TwRGZN6BBGI/AAAAAAAACNA/_z47WNmUOfs/s1600/%255Bwww.gj37765.blogspot.com%255Dcontrols.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;
}
#mdfb{
font:12px/1.2 Arial,Helvetica,san-serif;color:#666;
}
#mdfb a,#mdfb a:hover,#mdfb a:visited{
text-decoration:none;
}
.mdbox-title{
background:#000;
color:#fff;
font-size:20px !important;
font-weight:bold;
margin:10px 0;
border:20px solid #ddd;
/*border-radius*/
-webkit-border-radius:6px;
-moz-border-radius:6px;
border-radius:6px;
/*box-shadow*/
-webkit-box-shadow:5px 5px 5px #CCCCCC;
-moz-box-shadow:5px 5px 5px #CCCCCC;
box-shadow:5px 5px 5px #CCCCCC;
padding:10px;
line-height:25px;
font-family:arial !important;
}
.mdbox-tagline{
color:#999;
margin:0;
text-align:center;
}
#mdsubs-container{
padding:35px 0 30px 0;
position:relative;
}a:link,a:visited{
border:none;
}
.demo{
display:none;
}
</style>
<script type="text/javascript">
jQuery(document).ready(function(){
if (document.cookie.indexOf('visited=false') == -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:"600px", inline:true, href:"#mdfb"});
}});
</script>
<div style='display:none'>
<div id='mdfb' style='padding:10px; background:#fff;'>
<center>
<table align="center"background="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDknzEPE5aU3J6r-48ySEYk9r_hEbqnoaz7rhklTzmx9FF7-jjWlHYMUtnfTLZw-sHfhxghp3pfCYNaOJfv-f7FBo8YMAjmVVfj0rEciXdnAYSQ9RPHyLEOsMWh-6k6O-5YCPjxTkglWvl/s1600/adsense+background+image%2528gj37765.blogspot.com.jpg.png" border="0" height="300" style="width: 505px;">
<tbody>
<tr>
<td height="345" width="505">
<div align="right">
<script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script><fb:fan profile_id="139599769569054" stream="0" connections="15" logobar="0" width="360" height="270" css="http://makingdifferent.github.com/blogger-widgets/MD%20on%20facebook.css"></fb:fan>
</div>
</td>
</tr>
</tbody>
</table>
</center>
<p style=" float:right;margin-right:35px;font-size:9px;">
By <a style=" font-size:9px;color:#3B78CD;text-decoration:none;" href="http://haurpugur.blogspot.com/">Making Different</a> | <a style=" font-size:9px;color:#3B78CD;text-decoration:none;" href="http://www.makingdifferent.com/2012/05/jquery-pop-up-facebook-like-box-with.html">Get This !</a>
</p>
</div>
</div>


Note :
Ganti ID FP kamu ( Warna merah )