var affi_ID = 'bokugahontoun-22'
var dev_ID = 'D34YH1MK1CM3CP'
var xsl_URL = 'http://goukou.com/aws/amazon/best_seller.xsl'

var Category = new Array(5);
Category[0] = 'books-jp==466282=='
Category[1] = 'books-jp==554210=='
Category[2] = 'books-jp==492062=='
Category[3] = 'books-jp==492054=='
Category[4] = 'books-jp==505312=='

var Category_Pickup = new Array(1);
Category_Pickup = Category[Math.floor(Math.random() * Category.length)].split("==")

var page_no = Math.floor(Math.random() * 5) + 1;
var Base_URL = "http://xml-jp.amznxslt.com/onca/xml3?mode=" + Category_Pickup[0] + "&BrowseNodeSearch=" + Category_Pickup[1] + "&page=" + page_no + "&locale=jp&dev-t="+ dev_ID +"&t=" + affi_ID + "&type=heavy&f=" + xsl_URL;

document.write('<iframe src="' + Base_URL + '" width="270" height="200" frameborder="0" scrolling="no">この部分は iframe 対応のブラウザで見てください。</iframe>');