//ランダム出力スクリプト

ranimg = new Array();
ranimg[0] = "images/img_main01.jpg";
ranimg[1] = "images/img_main02.jpg";
chip = Math.floor(ranimg.length * Math.random());
ranimg = ranimg[Math.floor(chip)];
document.write('<img src="'+ ranimg +'">');