var tongji = {
	"getCookie" : function (n){
	    var c=document.cookie.split("; ");
	    for(var i=0;i<c.length;i++)
	    {
	    	var p=c[i].split("=");
	        if(n==p[0])
	    	   try   { return decodeURIComponent(p[1]) }
	           catch(e)  { return null }
	    }
        return null;
    },
    "set_u_session" : function (){
	    var u_session = this.getCookie("u_session");
	    if(!u_session){
	    	var t=document.createElement('script');
	    	t.src = "http://st.5258.net/tongji.php?u=1&t=" + Math.random();
		    t.type='text/javascript';
		    t.id="netbarcookie";
		    document.getElementsByTagName('head')[0].appendChild(t);
	    }
    },
    "getimg" : function ()
    {
	    var u_session = this.getCookie("u_session");
	    if(u_session){
		    (new Image).src = "http://st.5258.net/u1.gif?u=" + u_session + "&nid=" + this.getnid()+"&t=" + Math.random();;
	    } else {
		    setTimeout("tongji.getimg()",100);
	    }
    },
    "getnid":function (){
    	var url = window.location.href.toString();
    	var p1 = /[0-9]{3,6}\.5258\.net/;
    	var p2 = /www5\.1616\.net\/\??[0-9_]{3,11}/;
    	var nid = '';
    	if(p1.test(url)){
    		var nids = url.split(".");
    		nid = nids[0].replace("http://","");
    	}
    	if(p2.test(url)){
    		var nids = url.split("/");
    		if(nids[3].indexOf("?") != -1){
    			var nids2 = nids[3].split("?");
    			nid = nids2[1];
    		} else {
    			nid = nids[3];
    		}
    	}
    	return nid;	
    }
};
setTimeout("tongji.set_u_session()",500);
setTimeout("tongji.getimg()",500);