tgt = 'target="_blank"';  // リンクを開くターゲット（HTML書式）

url = new Array();
img = new Array();

/* リンク先とそのバナーを記述 */
url[1] = "http://www.skijournal.co.jp/search/detail.php?ID=2762"; img[1] = "img/sjbook/kodosuki2012.jpg";
url[2] = "http://www.skijournal.co.jp/search/detail.php?ID=2761"; img[2] = "img/sjbook/soulslide2012.jpg";
url[3] = "http://www.skijournal.co.jp/search/detail.php?ID=2698"; img[3] = "img/sjbook/selection2012.jpg";
url[4] = "http://www.skijournal.co.jp/search/detail.php?ID=2701"; img[4] = "img/sjbook/lf16";
url[5] = "http://www.skijournal.co.jp/search/detail.php?ID=2690"; img[5] = "img/sjbook/official2012.jpg";
url[6] = "http://www.skijournal.co.jp/search/detail.php?ID=2692"; img[6] = "img/sjbook/sidoukentei2012.jpg";
url[7] = "http://www.skijournal.co.jp/search/detail.php?ID=2778"; img[7] = "img/sjbook/toranomaki.jpg";
url[8] = "http://www.skijournal.co.jp/search/detail.php?ID=2776"; img[8] = "img/sjbook/the free ski basic.jpg";

p = Math.round(Math.random() * (url.length - 1));
DOC = "<a href='" + url[p] + "' " + tgt + "><img src='" + img[p] + "' border=0></a>";