// populate the wrapNav include

var populateJSIncludes = '';
populateJSIncludes +='<script type="text/Javascript" src="http://www.virgin.net/vmwrapper/js/wrapFooter.js">'+'</'+'script>';

document.write(populateJSIncludes);

<!-- standard tag -->
document.writeln('<script src="http://amp.virginmedia.com/s/virginmedia.js" type="text/JavaScript"></script>');