const url = 'https://id-libre.org/live/status-json.xsl';
const statusElement = document.getElementById('on');

async function status() {
  const response = await fetch(url);
  const data = await response.json();
  const status = data.icestats.source ? 'on' : 'off'

  statusElement.innerHTML = status;
  statusElement.classList.remove("on", "off");
  statusElement.classList.add(status);
}

status();

setInterval(() => status(), 2000);