function getCSS()
{
 datetoday = new Date();
 timenow=datetoday.getTime();
 datetoday.setTime(timenow);
 thehour = datetoday.getHours();

 if (thehour > 20)
  display = "http://tmp.dev-feel-kobe.info/common/css/time_css/night.css";
   else if (thehour > 15)
  display = "http://tmp.dev-feel-kobe.info/common/css/time_css/evening.css";
 else if (thehour > 8)
  display = "http://tmp.dev-feel-kobe.info/common/css/time_css/daytime.css";
 else if (thehour > 4)
  display = "http://tmp.dev-feel-kobe.info/common/css/time_css/morning.css";
 else if (thehour >= 0)
  display = "http://tmp.dev-feel-kobe.info/common/css/time_css/night.css";
 else
  display = "tree_sunset.css";
 var css = '<';  css+='link rel="stylesheet" href=' + display + ' \/';  css+='>';
 document.write(css);
}

getCSS();