function random(){
	var aryImage = new Array();
	var aryAlt = new Array();
	var aryHref = new Array();

	aryImage[0] = "img/blog_bn_classroom.jpg";
	aryImage[1] = "img/blog_bn_report.jpg";
	aryImage[2] = "img/blog_bn_information.jpg";
	aryImage[3] = "img/blog_bn_shop.jpg";
	aryImage[4] = "img/blog_bn_first.jpg";
	aryImage[5] = "img/blog_bn_sakurai.jpg";

	aryAlt[0] = "木川田彩の釣り教室";
	aryAlt[1] = "海釣り公園レポート";
	aryAlt[2] = "編集部ブログ";
	aryAlt[3] = "釣り具屋さんに行こう";
	aryAlt[4] = "どきどきはじめての釣り体験";
	aryAlt[5] = "サラリーマン釣師のひとり言 by Sakurai";

	aryHref[0] = "classroom/";
	aryHref[1] = "report/";
	aryHref[2] = "information/";
	aryHref[3] = "shop/";
	aryHref[4] = "first/";
	aryHref[5] = "sakurai/";

	var dd = new Date();
	var sec = dd.getSeconds()
	var idx = sec % aryImage.length;

	var IMAGE = aryImage[idx];
	var ALT = aryAlt[idx];
	var HREF = aryHref[idx];

	document.write('<a href="' + HREF + '"><img src="' + IMAGE + '" alt="' + ALT + '" width="239" height="189" /></a>');
}
random();