function dispRandomBanner () {
	jumpURL = new Array();
	jumpURL[0] = "http://starbeauty.jp/special/hot_beauty/";
	jumpURL[1] = "http://starbeauty.jp/special/backstage_02/";

	imgURL = new Array();
	imgURL[0] = "blog_bn01.png";
	imgURL[1] = "blog_bn02.png";

	n = Math.floor(Math.random()*jumpURL.length);

	document.write("<a href='" + jumpURL[n] + "'>");
	document.write("<img src='/sbtwitter/images/" + imgURL[n] + "' alt='' />");
	document.write("</a>");
}