template.html

<html>
<head>
    <title>Redirecting to: %pagetitle%</title>
    <meta charset="utf-8"> 
    <meta http-equiv="refresh" content="15;url=%url%">
    <meta name="ROBOTS" content="NOINDEX, FOLLOW" />
    <meta http-equiv="cache-control" content="max-age=0" />
    <meta http-equiv="expires" content="Tue, 01 Jan 1980 1:00:00 GMT" />
    <meta http-equiv="pragma" content="no-cache" />
    <link rel="stylesheet" href="%pluginurl%/css/interstitial.css" type="text/css" media="all" />
</head>

<body>

<div id="header">
    <div id="logo">
        <img src="%pluginurl%/img/logo.jpg" />
    </div>
    
    <div id="skip">
        <p><a href="%url%" title="Skip this ad">Skip this ad &raquo;</a></br>
        or wait <span id="timer">15</span> seconds</p>
    </div>
</div>

<div id="ad">
%ad%
</div>

<script>
var count = 15;

function countDown(){
    var timer = document.getElementById("timer");
    if(count > 0){
        count--;
        timer.innerHTML = count;
        setTimeout("countDown()", 1000);
    }else{
        window.location.href = "%url%";
    }
}
countDown();
</script>

</body>
</html>