var siteid = 349;
var bnrand = Math.round(Math.random() * 100000);
document.write('<iframe src="http://ad1.adfun.ru/cgi-bin/ad?act=show&rnd=' + bnrand + '&imgsize=70&filestyle=' + '&numbun=4' + '&siteid=' + siteid + '&show=hor" frameborder=0 vspace=0 hspace=0 width=100% height=70 marginwidth=0 marginheight=0 scrolling=no></iframe>');