function changeCss_E() {
	dd = new Date();
	hr = dd.getHours();
	mn = dd.getMinutes();
	if (hr < 10) { hr = "0" + hr; }
	if (mn < 10) { mn = "0" + mn; }
	op = String(hr) + String(mn);
	
	if (op > 659 && op < 1700) { 
	document.write('<link href="http://www.akky-jp.com/css/e_day.css" rel="stylesheet" type="text/css" media="screen,print" />');  
	}
	else { document.write('<link href="http://www.akky-jp.com/css/e_twilight.css" rel="stylesheet" type="text/css" media="screen,print" />'); }


}