//画像データ----------------------------------------------------------------------------------------------
var imglist = new Array(
          "img/pict_main1g.jpg",
          "img/pict_main1f.jpg",
          "img/pict_main1h.jpg",
		  "img/pict_main1i.jpg",
		  "img/pict_main1j.jpg" );
       var selectnum = Math.floor((Math.random() * 100)) % imglist.length;
       var output = "<img src=" + imglist[selectnum] + ">";
       document.write(output);