//背景表示Javascript

var imgdir = "./img/bodyBG/";
var bgurl = new Array();
var now_times;
var now_month;
var day_num;
var day_bg = new Array();
var bgs;
var bgct = 1;
var dayct;

//バックグランドイメージ画像
  var scripts  = document.createElement( 'script' );
  scripts.type = 'text/javascript';
  scripts.src  = "./js/bgdata.txt";
  var head2    = document.getElementsByTagName( 'head' )[0];
  head2.appendChild( scripts );


//ページ読み込みが完了したら
function bgload(){
 daybg_data();
 change_bg();

}

//バックグランドPhoto表示
function change_bg(){
 now_times = new Date();
 now_month = now_times.getMonth();
 day_num = now_times.getDate()

 document.getElementById("bodyBG").style.backgroundImage = "url(" + imgdir + day_bg[day_num] + ")";

}

//各日ごとにバックイメージを割り当てる
function daybg_data(){
 bgs = bgurl.length - 1;

 for(dayct = 1; dayct < 32; dayct++){
  day_bg[dayct] = bgurl[bgct];

  if(bgct == bgs){ bgct = 1;}
  else { bgct++; }

 }
}