var wfuvNowPlaying = document.createElement('span');
wfuvNowPlaying.id = 'wfuv-alt-now-playing';

wfuvNowPlaying.innerHTML = '<iframe src="http://nowplaying.wfuv.org/pleditor/external/alternate_now_playing_generate.php?playlist_id=1" width="240" height="45" frameborder="0" scrolling="no" id="now_playing_iframe" allowtransparency="true"></iframe>'; 

var scr = document.getElementById('wfuv-alt-now'); 
scr.parentNode.insertBefore(wfuvNowPlaying, scr);