var adsurl = "http://wuxian.wasu.cn/sj/ly/jqjd/";
var adswihth = "256";
var adsheight = "115";
var adsfile = "http://ads.hzcnc.com/data/adsfile/200908/20090821/ad20090821592237203214.jpg"; 
document.write("<a href='");
document.write(adsurl);
document.write("' target='_blank'>");
var showimg = "<img src='" + adsfile + "' border='0' width='" + adswihth + "'  height='" + adsheight + "'>";
document.write(showimg);
document.write("</a>");