function setStyle(title) {
	var lnks = document.getElementsByTagName('link');
	for (var i = lnks.length - 1; i >= 0; i--) {
	  if (lnks[i].getAttribute('rel').indexOf('style') > -1 && lnks[i].getAttribute('title')) {
	    if (lnks[i].getAttribute('title') == title) lnks[i].disabled = false;
      else lnks[i].disabled = true;
    }
  }
  mycss = title.toLowerCase();
}

function timedStyle() {
  var time_local = new Date();
  time_local.setTime(time_local.getTime() + time_offset);
  var h = time_local.getHours();
	if (h <= 7) setStyle('Night');
	if (h >= 8 && h <= 18) setStyle('Day');
	if (h >= 19 && h <= 21) setStyle('Dusk');
	if (h >= 22) setStyle('Night');
  clearTimeout(timer_skin);
  timer_skin = setTimeout('timedStyle()', 60*60*1000+10 - ((new Date()).getTime() + time_offset) % 60*60*1000);
}

timer_skin = setTimeout('timedStyle()', 60*60*1000+10 - ((new Date()).getTime() + time_offset) % 60*60*1000);