datetoday = new Date();
	timenow=datetoday.getTime();
	datetoday.setTime(timenow);
	thehour = datetoday.getHours();
	
	if (thehour >= 18) 
		display = "night.css";
	else if (thehour >= 12) 
		display = "evening.css";
	else if (thehour >= 6) 
		display = "morning.css";
	else if (thehour >= 0) 
		display = "night.css";
	else 
		display = "morning.css";
	
	var css = '<';
	css+='link rel="stylesheet" href=' + display + ' \/';
	css+='>';
	
	document.write(css);