// rearrange document.lastModified into ISO order

function chdate() {
  var el;
  
  if (!(el = document.getElementById("changed"))) return;
  if (!document.lastModified) {
    el.appendChild(document.createTextNode("(Revised date unavailable)"));
    return;
  }
  var zfill = function(num) {
    return ((num < 10) ? "0" : "") + num.toString();
  };
  
  var dat = new Date(document.lastModified);

  dat = dat.getUTCFullYear() + "-" + zfill(dat.getUTCMonth() + 1) + "-" +
    zfill(dat.getUTCDate());
  el.appendChild(document.createTextNode("Last revised: " + dat));
}
//setup onload function
if (typeof window.addEventListener != 'undefined') {
	//.. gecko, safari, konqueror, opera and standard
	window.addEventListener('load', chdate, false);
}
else if (typeof window.attachEvent != 'undefined') { //.. win/ie
	window.attachEvent('onload',chdate);
}