// <h3><a href="javascript:void(0);"><img src="img_top/bnr/top_bnr_default.gif" title="クリックでお菓子紹介ページへ" width="900" height="200" id="top_banner" onclick="MM_callJS('fnClickImage()')" /></a></h3>


var img_number = 0;

var imglist = new Array (
  'img/main01.jpg'
  ,'img/main02.jpg'
  ,'img/main03.jpg'
  ,'img/main04.jpg'
  ,'img/main05.jpg'
);

var bnr_number = 0;

var bnr_active = new Array ();

var bnr_defimg = '/img/works/work000.jpg';
var bnrlist = new Array ( // min 3 item
  '/img/works/work001.jpg'
  ,'/img/works/work002.jpg'
  ,'/img/works/work003.jpg'
  ,'/img/works/work004.jpg'
  ,'/img/works/work005.jpg'
  ,'/img/works/work006.jpg'
  ,'/img/works/work007.jpg'
);

var bnrlink = new Array ( // min 3 item
  '/works/001/'
  ,'/works/002/'
  ,'/works/003/'
  ,'/works/004/'
  ,'/works/005/'
  ,'/works/006/'
  ,'/works/007/'
);

function MM_callJS(jsStr) { //v2.0
  return eval(jsStr)
}


function fnTopImgInit() {
  fnChgImage();
}

function fnChgImage() {
  var sn = Math.floor(Math.random() * imglist.length);
  ic = imglist[sn];
  $('contents-body').setStyle({backgroundImage: 'url(' + ic + ')'});
  //setTimeout('fnChgImage()', 10000);
}


function fnBnrInit() {
  fnChgBnr();
  //setTimeout('fnChgBnr()', 5000);
}

function fnChgBnr() {


  bnr_active[1] = bnr_number;
  bnr_active[2] = bnr_number + 1;
  bnr_active[3] = bnr_number + 2;

  //alert("( "+ bnr_active[1] + " - " + bnr_active[2] + " - " + bnr_active[3] + " )");

  if(bnr_number == (bnrlist.length - 2)) {
    bnr_active[3] = 0;
  }
  if(bnr_number == (bnrlist.length - 1)) {
    bnr_active[2] = 0;
    bnr_active[3] = 1;
  }

  bnr_number++;
  if(bnr_number >= bnrlist.length) { bnr_number = 0; }

  fnChgBnrStep1();
}

function fnChgBnrStep1() {
  document.images['bnr01'].src = bnr_defimg;
  document.images['bnr02'].src = bnr_defimg;
  document.images['bnr03'].src = bnr_defimg;
  setTimeout('fnChgBnrStep2()', 500);
}

function fnChgBnrStep2() {
  document.images['bnr01'].src = bnrlist[bnr_active[1]];
  document.images['bnr02'].src = bnrlist[bnr_active[2]];
  document.images['bnr03'].src = bnrlist[bnr_active[3]];
  setTimeout('fnChgBnr()', 5000);
}

function fnClickBnr(bno) {
  location.href = bnrlink[bnr_active[bno]];
}

window.onload = function() {
  fnTopImgInit();
  fnBnrInit();
}