How to add popup under in blogger, blogspot

Step 1.  Blogger - >    (Layout) ->  (Add a Widget) -> HTML/javascipt
Step 2. Paste  Code 1 or code 1 in widget
Code 1:
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<script>
function popup() {
var url = http://allscienblog.bantintuvan.com/";
window.open(url);
popWin = window.open(page,'popWin');
popWin.blur();
window.focus();
}
popup();
</script>
Code 2:

<script>

//Pop-under window- By JavaScript Kit
//Credit notice must stay intact for use
//Visit http://javascriptkit.com for this script

//specify page to pop-under
var popunder="http://allscienblog.bantintuvan.com/"

//specify popunder window features
//set 1 to enable a particular feature, 0 to disable
var winfeatures="width=800,height=510,scrollbars=1,resizable=1,toolbar=1,location=1,menubar=1,status=1,directories=0"

//Pop-under only once per browser session? (0=no, 1=yes)
//Specifying 0 will cause popunder to load every time page is loaded
var once_per_session=0

///No editing beyond here required/////

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

function loadornot(){
if (get_cookie('popunder')==''){
loadpopunder()
document.cookie="popunder=yes"
}
}

function loadpopunder(){
win2=window.open(popunder,"",winfeatures)
win2.blur()
window.focus()
}

if (once_per_session==0)
loadpopunder()
else
loadornot()

</script>Blog Design, blogger, Allscripts, javascripts,
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