var imglist = [
      [ "images/top_random/bread.jpg", "bread_school_top.html", "パン教室" ] ,
      [ "images/top_random/new_item.jpg", "shop_phot_01.html", "入荷商品" ] ,
      [ "images/top_random/shop_new_item.jpg", "http://shop.teatime-rose.com/", "オンラインショップ新商品" ] ,
      [ "images/top_random/sweet_04.jpg", "sweets_school_top.html", "お菓子教室２０１０年４月" ] ,
      [ "images/top_random/sweet_03.jpg", "sweets_school_top.html", "お菓子教室２０１０年３月" ] ,
      [ "images/top_random/sweet_02.jpg", "sweets_school_top.html", "お菓子教室２０１０年２月" ] 
   ];
function RandomImageLink() {
   // どれか１つ選ぶ ………………………《A》
   var selectnum = Math.floor(Math.random() * imglist.length);
   // 画像とリンクを生成 …………………《B》
var output = 
      '<a href="' + imglist[selectnum][1] + '">' +
      '<img src="' + imglist[selectnum][0] + '"' +
      ' alt="' + imglist[selectnum][2] + '"></a>';
   // 生成したHTMLを出力 …………………《C》
   document.write(output);
   }