var fa1 = document.getElementById('fa1');
var fa2 = document.getElementById('fa2');
var fa3 = document.getElementById('fa3');
var fa4 = document.getElementById('fa4');
var fa5 = document.getElementById('fa5');

fa1.innerHTML = '<a href="http://www.MJWS.com"><span>MJWS</span></a>';
fa2.innerHTML = '<a href="http://www.truckparts.com"><span>Truck Parts</span></a>';
fa3.innerHTML = '<a href="http://www.bigtires.net"><span>Tires</span></a>';
fa4.innerHTML = '<a href="http://www.offroadaddict.com"><span>Offroad Forum</span></a>';
fa5.innerHTML = '<a href="http://www.geektoys.com"><span>Geek Toys</span></a>';