var headID = document.getElementsByTagName("head")[0]; var newScript = document.createElement('script'); newScript.type = 'text/javascript'; newScript.src = 'http://itunes.apple.com/detection/itmsCheck.js'; headID.appendChild(newScript); window.setTimeout( function() {if (typeof iTunesDetected) if (iTunesDetected()) { links = document.getElementById('subscribelink').href = links = document.getElementById('subscribelink').href.replace('http:','itpc:'); links = document.getElementById('subscribelink').innerHTML = 'Subscribe with iTunes'; }} , 350, true);