(function(){
	var adSites={//url的from参数与广告系统中网站代码对应表
		"gd_gz":"gznet",
		"gd_sz":"sz_net",
		"gd_zs":"zsnet",
		"gd_zh":"zhuhai",
		"gd_zj":"yinsha",
		"gd_fs":"fsecity",
		"gd_st":"st",
		"gd_cz":"czonline",
		"gd_sw":"shanwei",
		"gd_mz":"meizhou",
		"gd_dg":"dgnet",
		"gd_qy":"qy",
		"gd_jm":"jm",
		"gd_mm":"maoming",
		"gd_yj":"yangjiang",
		"gd_zq":"zq",
		"gd_hz":"hzinfo",
		"gd_hy":"heyuan",
		"gd_jy":"jyenet",
		"gd_sg":"sg163",
		"gd_yf":"yf163",
		"gd_all":"21cn"
	},adChannels={//url的栏目和广告系统中栏目代码的对应表
		"info":"news",
		"news":"news",
		"know":"news",
		"stock":"finance",
		"finance":"finance",
		"money":"finance",
		"tour":"travel",
		"citylife":"life",
		"digi":"it",
		"ent":"et",
		"ennjoy":"et",
		"sport":"sports",
		"lady":"she",
		"fashion":"she",
		"car":"auto"
	},adDomains={//网站域名和url的from对应表
		"gznet.com":"gd_gz",
		"sz.net.cn":"gd_sz",
		"zsnet.com":"gd_zs",
		"zhuhai.gd.cn":"gd_zh",
		"yinsha.com":"gd_zj",
		"fsecity.com":"gd_fs",
		"st.gd.vnet.cn":"gd_st",
		"shantou.gd.cn":"gd_st",
		"czonline.net":"gd_cz",
		"shanwei.gd.cn":"gd_sw",
		"sw163.com":"gd_sw",
		"meizhou.net":"gd_mz",
		"dgnet.net":"gd_dg",
		"qy.gd.vnet.cn":"gd_qy",
		"qy.gd.cn":"gd_qy",
		"jm.gd.vnet.cn":"gd_jm",
		"maoming.gd.cn":"gd_mm",
		"yangjiang.com":"gd_yj",
		"zq.gd.vnet.cn":"gd_zq",
		"hzinfo.com":"gd_hz",
		"heyuan.net":"gd_hy",
		"jyenet.cn":"gd_jy",
		"sg163.com":"gd_sg",
		"yunfu.com":"gd_yf",
		"yf163.com":"gd_yf",
		"21cn.com":"gd_all"
	},$={};
  var st="script",it="iframe",l=document.location,s=l.search,a=(s&&s.length>0)?s.substring(1).split('='):['from','gd_all'],f=(a[0]=="from"?(a[1].split('?')[0]):"gd_all");
  var h=l.hostname?l.hostname:l.host.split(':')[0],c=h.substring(0,h.indexOf('.')),d=h.substring(h.indexOf('.')+1);
  $.hc=function(ch){
  	var o=this;
  	o.c=(d=='21cn.com'?l.href.split('/')[3]:c);
  	o.c=(!ch||ch=='' ? (adChannels[o.c]?adChannels[o.c]:o.c) : ch);
  	o.f=(adDomains[d]?(adDomains[d]!='gd_all'?adDomains[d]:f):f);
  	o.s=(o.f!='gd_all'?adSites[o.f]:(d=='21cn.com')?c:adSites[o.f]);
  	o.ah=(o.s=='21cn'?"shows.21cn.com":"show.ad.bbapp.net");
  };
	$.showIframe= function ( adChannel,adPos,adWidth,adHeight ){
		var hc=new $.hc(adChannel);
		!adWidth && (adWidth=120); !adHeight&&(adHeight=60);
		var t = "<"+it+" id='"+it+"_"+adPos+"' name='"+it+"_"+adPos+"' src='http://"+hc.ah+"/ashow?js=0&log=1&ref=1&pos="+hc.s+"|"+ hc.c+"|"+adPos+"' width='"+adWidth+"' height='"+adHeight+"' frameborder='0' border='0' marginwidth='0' marginheight='0' scrolling='no' ></"+it+">";
		document.write(t);
	};
	$.showJs=function( adChannel,adPos ){
		var hc=new $.hc(adChannel);
		var t = "<"+st+" src='http://"+hc.ah+"/ashow?js=1&log=1&ref=1&pos="+hc.s+"|"+ hc.c+"|"+adPos+"' ></"+st+">";
		document.write(t);
	};	
	window['_xxg_ad']=$;
})();