$(function() {
	myDate = new Date();
	hour = myDate.getHours();
	
	cName = "no";

	if( hour >= 4 && hour < 10 ) {
		cName = "mo";
	} else if( hour >= 10 && hour < 18 ) {
		cName = "no";
	} else {
		cName = "ni";
	}

	$('body').attr('class',cName);

});