JavaScript Popunder Power

Popunder Power

<script>

var popunder=new Array()
popunder[0]="http://www.codelibary.com"
popunder[1]="http://www.google.com"
popunder[2]="http://www.yahoo.com"

//Specify the width and height of new popunder window (in pixels).
var width = '600'; 
var height = '350';

//these are obvious variables. set "yes" or "no".
var p = 'scrollbars=yes, resizable=yes, toolbar=yes,' + 'menubar=yes, status=yes, location=yes, left=85, top=20, height=' + height + ',width=' + width;

// Load new PopUnder only once per browser session? (0=no, 1=yes)
// Putting 0 will cause the Popunder to load every time page is loaded
// Specifying 1 will cause it to load only once per session
var one_time=1

// That's it! Don't edit the code below unless you're really good. :-P //

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

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

function load_pop_power(){
	winr = window.open(popunder[Math.floor(Math.random()*(popunder.length))], "bw", p)
	winr.blur()
	window.focus()
}

if (one_time==0)
	load_pop_power()
else
	loadornot()
</script>