var ctxtUrl = encodeURIComponent(document.URL);
var ref = encodeURIComponent(document.referrer);
var ctxtids = new Array("gam0000","fin0100","fin0101","com1001","pro0902","app0401","fin0205","com0900","sof0300","hea0204","car0100","fin0300","pro0801","pro1000","pro1800","pro1700");
var rand = Math.floor( Math.random() * 16 );
var ctxtid = ctxtids[rand];
var url = "http://im.ecnavi.ov.yahoo.co.jp/js_flat/?source=ecnavi_jp_toremaga_im&type=toremaga_im_" + ctxtid +"&ctxtId=" + ctxtid + "&maxCount=6&keywordCharEnc=utf8&outputCharEnc=utf8&gen=&age=&ctxtUrl=" + ctxtUrl + "&ref=" + ref + "&gen=M&age=30" ;


document.write('<SCRIPT Language="JavaScript" SRC="'+ url +'"></'+'SCRIPT>');