//画像とALTも設定
var image= new Array();
var alt = new Array();
var url = new Array();

image[0]='/share/images/top/visual13.jpg';
alt[0] = "あれ？オートチャージができなくなっちゃった！？";
url[0] = 'http://pasmo.jp/feature/ac_2011/index.html?linkid=pasmocojpmainAC2011112101';

image[1]='/share/images/top/visual14.png';
alt[1] = "電車もバスもお買い物も小銭いらずでらくらく♪";
url[1] = 'http://pasmo.jp/naruhodo/index.html?linkid=pasmocojpmainNARUHODO2011112901';

image[2]='/share/images/top/visual12.jpg';
alt[2] = "PASMO CAFE OPEN!";
url[2] = 'http://pasmo.jp/index.html?linkid=pasmocojpmainCAFE2011112902';

function randimage(param) {
	if(param == true){
		var n = Math.floor(Math.random()*image.length);
		var code = '<a href="'+url[n]+'" target="_blank">'+'<img src="'+image[n]+'" alt="'+alt[n]+'" width="780" height="225" />'+'</a>';
		document.getElementById('randomImage').innerHTML = code;
	}
}