// JavaScript Document



//time change bg script

function init(){
var dateTime = new Date();
var hours = dateTime.getHours();

	if(hours >= 18){
	styleName = "css/body_bg_night.css";//午後18時以降
	}else {
	styleName = "css/body_bg_day.css";//午前6時以降
	}
	
 var css = '<';  css+='link rel="stylesheet" href=' + styleName + ' \/';  css+='>';
 document.write(css);
}