var wfuvOnNow = document.createElement('span');
wfuvOnNow.id = 'wfuv-alt-on-now';

var str = 'The Alternate Side 6pm-10pm';

wfuvOnNow.innerHTML = str;

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