var nn_undefined;function nn_isNull(object) {  return nn_undefined == object || object == null;}var nn_domainSuffixes = [ "com", "net", "org", "biz", "info", "gov", "edu", "mil" ];function nn_arrayContains(nn_array, nn_token) {  for (var nn_i = 0; nn_i < nn_array.length; nn_i++) {    if (nn_array[nn_i] == nn_token) {      return true;    }  }  return false;}function nn_removePort(nn_domain) {  var nn_colonIndex = nn_domain.lastIndexOf(':');  if (nn_colonIndex > 0) {    return  nn_domain.substring(0, nn_colonIndex);  }  return nn_domain;}function nn_getMinimumDomain(nn_domain) {  if (nn_isNull(nn_domain)) {    return null;  }  nn_domain = nn_domain.toLowerCase();  nn_domain = nn_removePort(nn_domain);  var nn_index = nn_domain.length;  while (3 < nn_index && nn_domain.charAt(nn_index - 3) == '.') {    nn_index -= 3;  }  var nn_previousIndex = nn_index;  nn_index = nn_domain.lastIndexOf('.', nn_index - 1);  var nn_token = nn_domain.substring(nn_index + 1, nn_previousIndex);  if (nn_arrayContains(nn_domainSuffixes, nn_token) && nn_index > 0) {    nn_previousIndex = nn_index;    nn_index = nn_domain.lastIndexOf('.', nn_index - 1);  }  if (nn_index == -1 || nn_domain.charAt(nn_index) == '.') {    nn_index ++;  }  if (nn_index == nn_previousIndex) {    return "." + nn_domain;  }  return "." + nn_domain.substring(nn_index);}/*----------------code for Sohu.com--------------------*/  sohu_main();    function sohu_main()  {  	var now = new Date().getTime();  	var datestr=escape(now*1000+Math.round(Math.random()*1000));  	var imageUrl ="http://pv.sohu.com/pv.gif" +"?t?=" + datestr + "?r?="+document.referrer;          if(top.location==self.location || document.domain.indexOf("mappage.go2map.com") >= 0 || document.domain.indexOf("partner.go2map.com") >= 0)       {                               document.write("<img src='" + imageUrl + "' height='1' width='1'>");        }        setsuvcookie(); 		  }    		  function setsuvcookie()    {	  	//var domainstr;  	var  cv=new Date().getTime();	var  cvstr=escape(cv*1000+Math.round(Math.random()*1000));	        var bgn = document.cookie.indexOf("SUV=");        if (bgn<0)  	{ 		        	if(document.domain.indexOf(".sohu.com") > 0)		{			var  COOKIESPAN = 1000*86400*365*5;		        		var  ckexp=new Date( cv + COOKIESPAN );                                document.cookie="SUV="+cvstr+"; path=/; expires="+ckexp.toGMTString()+"; domain=sohu.com";                        			return;		}        				document.write("<scr" + "ipt language='javascript' src='http://suvset.sohu.com/suv/setcookie.js?t=" + cvstr + "'></scr" + "ipt>");	  	}  	else  	{  		if ( 2 == Math.round(Math.random()* 10))                {                      imageUrl ="http://"+document.cookie.substr(bgn+11,5)+escape(new Date().getTime()).substr(7,6)+".dom.sohu.com/pv.gif?t?=1";                }        }   }/*----------------code for Sohu.com--------------------*/