Cara Membuat Iklan Melayang Di Tengah Blog

1. Login ke Blogger> Rancangan> elemen / tata letak > Add gadget/widget, pilih HTML/Javascript.
2. Masukkan kode di bawah ini :

<style type="text/css">

#topbar{
position:absolute;
left:9px;
border: 2px red;
padding: 2px;
background-color: #f2f2f2;
width: 350px;
visibility: hidden;
z-index: 100;
}
</style>

<script type="text/javascript">

var persistclose=0 //set to 0 or 1. 1 means once the bar is manually closed, it will remain closed for browser session
var startX = 30 //set x offset of bar in pixels
var startY = 5 //set y offset of bar in pixels
var verticalpos="fromtop" //enter "fromtop" or "frombottom"

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}

function closebar(){
if (persistclose)
document.cookie="remainclosed=1"
document.getElementById("topbar").style.visibility="hidden"
}

function staticbar(){
 barheight=document.getElementById("topbar").offsetHeight
 var ns = (navigator.appName.indexOf("Netscape") != -1) || window.opera;
 var d = document;
 function ml(id){
  var el=d.getElementById(id);
  if (!persistclose || persistclose && get_cookie("remainclosed")=="")
  el.style.visibility="visible"
  if(d.layers)el.style=el;
  el.sP=function(x,y){this.style.left=x+"px";this.style.top=y+"px";};
  el.x = startX;
  if (verticalpos=="fromtop")
  el.y = startY;
  else{
  el.y = ns ? pageYOffset + innerHeight : iecompattest().scrollTop + iecompattest().clientHeight;
  el.y -= startY;
  }
  return el;
 }
 window.stayTopLeft=function(){
  if (verticalpos=="fromtop"){
  var pY = ns ? pageYOffset : iecompattest().scrollTop;
  ftlObj.y += (pY + startY - ftlObj.y)/8;
  }
  else{
  var pY = ns ? pageYOffset + innerHeight - barheight: iecompattest().scrollTop + iecompattest().clientHeight - barheight;
  ftlObj.y += (pY - startY - ftlObj.y)/8;
  }
  ftlObj.sP(ftlObj.x, ftlObj.y);
  setTimeout("stayTopLeft()", 10);
 }
 ftlObj = ml("topbar");
 stayTopLeft();
}

if (window.addEventListener)
window.addEventListener("load", staticbar, false)
else if (window.attachEvent)
window.attachEvent("onload", staticbar)
else if (document.getElementById)
window.onload=staticbar
</script>

<div class="clear"></div>
<div id="topbar">
<div style="text-align:right">
<a style="color: rgb(255, 0, 0); font-weight: bold; font-style: italic;" href="" onclick="closebar(); return false"><span><button>TUTUP (X)</button></span></a></div><a style="font-weight: bold; color: black(51, 255, 51);">
</a><p><a style="font-weight: bold; color: black(51, 255, 51);" title=""><h2><center>Terima Kasih Sudah Berkunjung Di Like Ya Gan.</center></h2></a>

</p>
<left><table style="width: 700px; height: 50px;" border="0"><tbody><tr><td style="vertical-align: top;">
<center>
MASUKKAN KODE IKLAN YANG DIINGINKAN DI SINI atau kode facebook page

</center>

<p></p><p></p></td></tr></tbody></table></left></div>

3.  Masukkan kode yang dinginkan pada tempatnya, klik save.
4.  Selesai dan lihat hasilnya. 
5. Iklan akan muncul jika blog sudah selesai diloading. Saya sarankan templatenya yang ringan aja, heee
6. Silakan sobat atur ulang, untuk lebar tampilannya ditandai dengan huruf berwarna merah.

sumber;http://tutorial-blog90.blogspot.com/2012/06/membuat-iklan-melayang-di-tengah-blog.html