JavaScript: Mobile Popunder

mpopper.js

///Mobile PopUnder
var uri = "http://lander.com";
var site = "site.com ";
var func = 'firepop("'+uri+'")';

$(document).ready(function() {
  $('.content a').attr('onclick', func);
  $('.content a').attr('target', '_blank');
});

function cookie_set(value,exdays){
    var cookie_name = site + "pop";
    var exdate=new Date();
    exdate.setDate(exdate.getDate() + exdays);
    var cookie_value=escape(value) + ((exdays===null) ? "" : "; expires="+exdate.toUTCString() + "; path=/" );
    document.cookie=cookie_name + "=" + cookie_value;
}

function cookie_get(){
var cookie_name = "mrpop";
var i,x,y,cookie=document.cookie.split(";");
for (i=0;i<cookie.length;i++)
{
  x=cookie[i].substr(0,cookie[i].indexOf("="));
  y=cookie[i].substr(cookie[i].indexOf("=")+1);
  x=x.replace(/^\s+|\s+$/g,"");
  if (x==cookie_name)
    {
    return unescape(y);
    }
  }
}

function firepop( uri ){
	if( !uri ){uri = "http://www.google.com";}
	if( cookie_get() ){}
	else {
    cookie_set( true, 1 );
    document.location.assign( uri );
    return true;
	}

}