// JavaScript Document

//配列に背景画像割当

function init() {
	var typeArray = new Array("type1","type2","type3","type5","type6","type7","type8");
	var viewNum = Math.floor((Math.random() * 100)) % typeArray.length;
	var viewObj = typeArray[viewNum];
	for(var i=0; i<typeArray.length; i++) {
		document.getElementById(typeArray[i]).style.display = "none";
	}
	document.getElementById(typeArray[viewNum]).style.display = "block";
}