function getCSS(){
	datetoday = new Date();
	timenow = datetoday.getTime();
	datetoday.setTime(timenow);
	thehour = datetoday.getHours();
	if (thehour > 17)display = "night.css";
	else if (thehour > 5)display = "day.css";
	else if (thehour > 1)display = "night.css";
	else display = "night.css";
	var css = '<';  css+='link rel="stylesheet" href=css/' + display + ' \/';  css+='>';document.write(css);}