var bottom_m = 100;
	var bottom_n = Math.round(Math.random()*bottom_m)+1;



	if(bottom_n>=1 && bottom_n<=100) {
		//百度广告
		document.write('<div id="top_ad_banner" class="top_ad_banner" style="height:200px">');
		document.write('<script type="text/javascript">BAIDU_CLB_fillSlot("200580");</script>');
	}