// JavaScript Document

(function () {
  var onload = function (e) {
    for (var i = 0; i < document.images.length; ++i) {
      if (document.images[i].src.match(/^(.*)_rollout\.([^.]*)$/)) {
        (function (img, pre, ext) {
          var active = new Image(); active.src = pre + '_rollover.' + ext;
          var normal = new Image(); normal.src = pre + '_rollout.' + ext;
          var onmouseover = function (e) { img.src = active.src; }
          var onmouseout = function (e) { img.src = normal.src; }
          try {
            img.addEventListener('mouseover', onmouseover, false);
            img.addEventListener('mouseout', onmouseout, false);
          }
          catch (e) {
            img.attachEvent('onmouseover', onmouseover);
            img.attachEvent('onmouseout', onmouseout);
          }
        })(document.images[i], RegExp.$1, RegExp.$2);
      }
    }
  }
  try {
    window.addEventListener('load', onload, false);
  }
  catch (e) {
    window.attachEvent('onload', onload);
  }
})()


wall = new Array();

/* 使用する背景画像を好きなだけ記述 */
wall[0] = "img/title01.jpg";
wall[1] = "img/title02.jpg";

rnd = Math.round(Math.random() * (wall.length - 1));
document.write('<style type="text/css">#head { background-image:url(' , wall[rnd] , '); width: 794px; margin: 0px auto;	padding: 0px 8px 0px 7px; text-align:left; height: 434px;}</style>');


var iValue, rNumber;
var img1 = new Image();
var img2 = new Image();
var img3 = new Image();
img1 = "img/top-b02_rollout.jpg";
img2 = "img/top-b02a_rollout.jpg";
img3 = "img/top-b02b_rollout.jpg";	
function display_image(){
	iValue = Math.random() * 3;
	rNumber = Math.ceil(iValue);
	if(rNumber==0) rNumber++;
	document.image1.src=eval("img" + rNumber);
}