gistfile1.js

function callReevoo(cat, act, sku, url) {
  ReevooMark.Tracking.ga_track_event(cat, act, sku);
  ReevooMark.track_exit();
  setTimeout(function(){ window.location=url; }, 500);
  return false;
}

gistfile2.html

<a href="/index.cfm?id=ordering&amp;product=homeofficeX&amp;orderflow=p2p&amp;QSUsage=teleworker" 
  onclick="callReevoo('Propensity to buy', 'Buy Now – Product page', 'E_CS_-TELEX', '/index.cfm?id=ordering&amp;product=homeofficeX&amp;orderflow=p2p&amp;QSUsage=teleworker');" 
  id="button-homeoffice" 
  class="button-orange addPhone">
  Sign Up
</a>