var img = new Array;
img[0] = "/images/top/top_r_dino.gif";
img[1] = "/images/top/top_r_mychara.jpg";

var link = new Array;
link[0] = "/campaign/2009dino";
link[1] = "/campaign/2009mychara";

var alt = new Array;
alt[0] = "スリル満点の冒険！恐竜パーク登場！";
alt[1] = "アイテムがいっぱい！かわいいマイキャラが作れる！";


function rollbanner(){
var i = myrandom(img.length) - 1;
document.write("<a href=\""+ link[i] + "\"><img src=\""+img[i]+"\" alt=\""+alt[i]+"\" border=\"0\" class=\"img_bnr\" /></a>");
}
function myrandom(max){
var v = max * Math.random();
if(v == 0.0){v = 1;}else{v = Math.ceil(v);}
return v;
}

rollbanner();