标题：Google Analytics Urchin Module 源码
出处：BIWEB开源PHP WMS系统创始人ArthurXF肖飞的blog
时间：Sat, 17 Nov 2007 15:40:15 +0000
作者：ArthurXF
地址：http://www.bizeway.net/read.php/263.htm

内容：
学习一下urchin.js的源代码:
引用
//-- Google Analytics Urchin Module
//-- Copyright 2005 Google, All Rights Reserved.

//-- Urchin On Demand Settings ONLY
var _uacct=""; // set up the Urchin Account
var _userv=1; // service mode (0=local,1=remote,2=both)

//-- UTM User Settings
var _ufsc=1; // set client info flag (1=on|0=off)
var _udn="auto"; // (auto|none|domain) set the domain name for cookies
var _uhash="on"; // (on|off) unique domain hash for cookies
var _utimeout="1800"; // set the inactive session timeout in seconds
var _ugifpath="/__utm.gif"; // set the web path to the __utm.gif file
var _utsp="|"; // transaction field separator
var _uflash=1; // set flash version detect option (1=on|0=off)
var _utitle=1; // set the document title detect option (1=on|0=off)
var _ulink=0; // enable linker functionality (1=on|0=off)

//-- UTM Campaign Tracking Settings
var _uctm=1; // set campaign tracking module (1=on|0=off)
var _ucto="15768000"; // set timeout in seconds (6 month default)
var _uccn="utm_campaign"; // name
var _ucmd="utm_medium"; // medium (cpc|cpm|link|email|organic)
var _ucsr="utm_source"; // source
var _uctr="utm_term"; // term/keyword
var _ucct="utm_content"; // content
var _ucid="utm_id"; // id number
var _ucno="utm_nooverride"; // don't override

//-- Auto/Organic Sources and Keywords
var _uOsr=new Array();
var _uOkw=new Array();
_uOsr[0]="google"; _uOkw[0]="q";
_uOsr[1]="yahoo"; _uOkw[1]="p";
_uOsr[2]="msn"; _uOkw[2]="q";
_uOsr[3]="aol"; _uOkw[3]="query";
_uOsr[4]="lycos"; _uOkw[4]="query";
_uOsr[5]="ask"; _uOkw[5]="q";
_uOsr[6]="altavista"; _uOkw[6]="q";
_uOsr[7]="search"; _uOkw[7]="q";
_uOsr[8]="netscape"; _uOkw[8]="query";
_uOsr[9]="earthlink"; _uOkw[9]="q";
_uOsr[10]="cnn"; _uOkw[10]="query";
_uOsr[11]="looksmart"; _uOkw[11]="key";
_uOsr[12]="about"; _uOkw[12]="terms";
_uOsr[13]="excite"; _uOkw[13]="qkw";
_uOsr[14]="mamma"; _uOkw[14]="query";
_uOsr[15]="alltheweb"; _uOkw[15]="q";
_uOsr[16]="gigablast"; _uOkw[16]="q";
_uOsr[17]="voila"; _uOkw[17]="kw";
_uOsr[18]="virgilio"; _uOkw[18]="qs";
_uOsr[19]="teoma"; _uOkw[19]="q"; 

//-- Auto/Organic Keywords to Ignore
var _uOno=new Array();
//_uOno[0]="urchin";
//_uOno[1]="urchin.com";
//_uOno[2]="www.urchin.com";


//-- Auto/Organic Keywords to Ignore
var _uOno=new Array();
//_uOno[0]="urchin";
//_uOno[1]="urchin.com";
//_uOno[2]="www.urchin.com";


//-- Auto/Organic Keywords to Ignore
var _uOno=new Array();
//_uOno[0]="urchin";
//_uOno[1]="urchin.com";
//_uOno[2]="www.urchin.com";


//-- Auto/Organic Keywords to Ignore
var _uOno=new Array();
//_uOno[0]="urchin";
//_uOno[1]="urchin.com";
//_uOno[2]="www.urchin.com";


//-- Referral domains to Ignore
var _uRno=new Array();
//_uRno[0]=".urchin.com";

//-- **** Don't modify below this point ***
var _uff,_udh,_udt,_ubl=0,_udo="",_uu,_ufns=0,_uns=0,_ur="-",_ufno=0,_ust=0,_ubd=document,_udl=_ubd.location,_u
tcp="/",_uwv="1";
var _ugifpath2="http://www.google-analytics.com/__utm.gif";
if (_udl.protocol=="https:") _ugifpath2="https://ssl.google-analytics.com/__utm.gif";
if (!_utcp || _utcp=="") _utcp="/";
function urchinTracker(page) {
if (_udl.protocol=="file:") return;
if (_uff && (!page || page=="")) return;
var a,b,c,v,z,k,x="",s="",f=0;
var nx=" expires=Sun, 18 Jan 2038 00:00:00 GMT;";
var dc=_ubd.cookie;
_udh=_uDomain();
_uu=Math.round(Math.random()*2147483647);
_udt=new Date();
_ust=Math.round(_udt.getTime()/1000);
a=dc.indexOf("__utma="+_udh);
b=dc.indexOf("__utmb="+_udh);
c=dc.indexOf("__utmc="+_udh);
if (_udn && _udn!="") { _udo=" domain="+_udn+";"; }
if (_utimeout && _utimeout!="") {
x=new Date(_udt.getTime()+(_utimeout*1000));
x=" expires="+x.toGMTString()+";";
}
if (_ulink) {
s=_udl.search;
if(s && s!="" && s.indexOf("__utma=")>=0) {
if (!(_uIN(a=_uGC(s,"__utma=","&")))) a="-";
if (!(_uIN(b=_uGC(s,"__utmb=","&")))) b="-";
if (!(_uIN(c=_uGC(s,"__utmc=","&")))) c="-";
v=_uGC(s,"__utmv=","&");
z=_uGC(s,"__utmz=","&");
k=_uGC(s,"__utmk=","&");
if ((k*1) != ((_uHash(a+b+c+z+v)*1)+(_udh*1))) {_ubl=1;a="-";b="-";c="-";z="-";v="-";}
if (a!="-" && b!="-" && c!="-") f=1;
else if(a!="-") f=2;
}
}
if(f==1) {
_ubd.cookie="__utma="+a+"; path="+_utcp+";"+nx+_udo;
_ubd.cookie="__utmb="+b+"; path="+_utcp+";"+x+_udo;
_ubd.cookie="__utmc="+c+"; path="+_utcp+";"+_udo;
} else if (f==2) {
a=_uFixA(s,"&",_ust);
_ubd.cookie="__utma="+a+"; path="+_utcp+";"+nx+_udo;
_ubd.cookie="__utmb="+_udh+"; path="+_utcp+";"+x+_udo;
_ubd.cookie="__utmc="+_udh+"; path="+_utcp+";"+_udo;
_ufns=1;
} else if (a>=0 && b>=0 && c>=0) {
_ubd.cookie="__utmb="+_udh+"; path="+_utcp+";"+x+_udo;
} else {
if (a>=0) a=_uFixA(_ubd.cookie,";",_ust);
else a=_udh+"."+_uu+"."+_ust+"."+_ust+"."+_ust+".1";
_ubd.cookie="__utma="+a+"; path="+_utcp+";"+nx+_udo;
_ubd.cookie="__utmb="+_udh+"; path="+_utcp+";"+x+_udo;
_ubd.cookie="__utmc="+_udh+"; path="+_utcp+";"+_udo;
_ufns=1;
}
if (_ulink && v && v!="" && v!="-") {
v=unescape(v);
if (v.indexOf(";")==-1) _ubd.cookie="__utmv="+v+"; path="+_utcp+";"+nx+_udo;
}
_uInfo(page);
_ufns=0;
_ufno=0;
_uff=1;
}
function _uInfo(page) {
var p,s="",pg=_udl.pathname+_udl.search;
if (page && page!="") pg=escape(page);
_ur=_ubd.referrer;
if (!_ur || _ur=="") { _ur="-"; }
else {
p=_ur.indexOf(_ubd.domain);
if ((p>=0) && (p-1) { z=_uGC(dc,"__utmz="+_udh,";"); }
else { z="-"; }
t=_uGC(s,_ucid+"=","&");
t2=_uGC(s,_ucsr+"=","&");
t3=_uGC(s,"gclid=","&");
if ((t!="-" && t!="") || (t2!="-" && t2!="") || (t3!="-" && t3!="")) {
if (t!="-" && t!="") c+="utmcid="+_uEC(t);
if (t2!="-" && t2!="") { if (c != "") c+="|"; c+="utmcsr="+_uEC(t2); }
if (t3!="-" && t3!="") { if (c != "") c+="|"; c+="utmgclid="+_uEC(t3); }
t=_uGC(s,_uccn+"=","&");
if (t!="-" && t!="") c+="|utmccn="+_uEC(t);
else c+="|utmccn=(not+set)";
t=_uGC(s,_ucmd+"=","&");
if (t!="-" && t!="") c+="|utmcmd="+_uEC(t);
else c+="|utmcmd=(not+set)";
t=_uGC(s,_uctr+"=","&");
if (t!="-" && t!="") c+="|utmctr="+_uEC(t);
else { t=_uOrg(1); if (t!="-" && t!="") c+="|utmctr="+_uEC(t); }
t=_uGC(s,_ucct+"=","&");
if (t!="-" && t!="") c+="|utmcct="+_uEC(t);
t=_uGC(s,_ucno+"=","&");
if (t=="1") o=1;
if (z!="-" && o==1) return "";
}
if (c=="-" || c=="") { c=_uOrg(); if (z!="-" && _ufno==1) return ""; }
if (c=="-" || c=="") { if (_ufns==1) c=_uRef(); if (z!="-" && _ufno==1) return ""; }
if (c=="-" || c=="") {
if (z=="-" && _ufns==1) { c="utmccn=(direct)|utmcsr=(direct)|utmcmd=(none)"; }
if (c=="-" || c=="") return "";
}
if (z!="-") {
i=z.indexOf(".");
if (i>-1) i=z.indexOf(".",i+1);
if (i>-1) i=z.indexOf(".",i+1);
if (i>-1) i=z.indexOf(".",i+1);
t=z.substring(i+1,z.length);
if (t.toLowerCase()==c.toLowerCase()) cs=1;
t=z.substring(0,i);
if ((i=t.lastIndexOf(".")) > -1) {
t=t.substring(i+1,t.length);
cn=(t*1);
}
}
if (cs==0 || _ufns==1) {
t=_uGC(dc,"__utma="+_udh,";");
if ((i=t.lastIndexOf(".")) > 9) {
_uns=t.substring(i+1,t.length);
_uns=(_uns*1);
}
cn++;
if (_uns==0) _uns=1;
_ubd.cookie="__utmz="+_udh+"."+_ust+"."+_uns+"."+cn+"."+c+"; path="+_utcp+"; "+x+_udo;
}
if (cs==0 || _ufns==1) return "&utmcn=1";
else return "&utmcr=1";
}
function _uRef() {
if (_ur=="0" || _ur=="" || _ur=="-") return "";
var i=0,h,k,n;
if ((i=_ur.indexOf("://")) -1) {
k=h.substring(h.indexOf("/"),h.length);
if (k.indexOf("?") > -1) k=k.substring(0,k.indexOf("?"));
h=h.substring(0,h.indexOf("/"));
}
h=h.toLowerCase();
n=h;
if ((i=n.indexOf(":")) > -1) n=n.substring(0,i);
for (var ii=0;ii -1 && n.length==(i+_uRno[ii].length)) { _ufno=1; break; }
}
if (h.indexOf("www.")==0) h=h.substring(4,h.length);
return "utmccn=(referral)|utmcsr="+_uEC(h)+"|"+"utmcct="+_uEC(k)+"|utmcmd=referral";
}
function _uOrg(t) {
if (_ur=="0" || _ur=="" || _ur=="-") return "";
var i=0,h,k;
if ((i=_ur.indexOf("://")) < 0) return "";
h=_ur.substring(i+3,_ur.length);
if (h.indexOf("/") > -1) {
h=h.substring(0,h.indexOf("/"));
}
for (var ii=0;ii -1) {
if ((i=_ur.indexOf("?"+_uOkw[ii]+"=")) > -1 || (i=_ur.indexOf("&"+_uOkw[ii]+"=")) > -1) {
k=_ur.substring(i+_uOkw[ii].length+2,_ur.length);
if ((i=k.indexOf("&")) > -1) k=k.substring(0,i);
for (var yy=0;yy=2;ii--) {
try {
var fl=eval("new ActiveXObject('ShockwaveFlash.ShockwaveFlash."+ii+"');");
if (fl) { f=ii + '.0'; break; }
}
catch(e) {}
}
}
return f;
}
function __utmLinker(l) {
if (!_ulink) return;
var p,k,a="-",b="-",c="-",z="-",v="-";
var dc=_ubd.cookie;
if (l && l!="") {
if (dc) {
a=escape(_uGC(dc,"__utma="+_udh,";"));
b=escape(_uGC(dc,"__utmb="+_udh,";"));
c=escape(_uGC(dc,"__utmc="+_udh,";"));
z=escape(_uGC(dc,"__utmz="+_udh,";"));
v=escape(_uGC(dc,"__utmv="+_udh,";"));
k=(_uHash(a+b+c+z+v)*1)+(_udh*1);
p="__utma="+a+"&__utmb="+b+"&__utmc="+c+"&__utmz="+z+"&__utmv="+v+"&__utmk="+k;
}
if (p) {
if (l.indexOf("?")=0;i--) {
var c=parseInt(d.charCodeAt(i));
h=((h  21));
}
return h;
}
function _uFixA(c,s,t) {
if (!c || c=="" || !s || s=="" || !t || t=="") return "-";
var a=_uGC(c,"__utma="+_udh,s);
var lt=0,i=0;
if ((i=a.lastIndexOf(".")) > 9) {
_uns=a.substring(i+1,a.length);
_uns=(_uns*1)+1;
a=a.substring(0,i);
if ((i=a.lastIndexOf(".")) > 7) {
lt=a.substring(i+1,a.length);
a=a.substring(0,i);
}
if ((i=a.lastIndexOf(".")) > 5) {
a=a.substring(0,i);
}
a+="."+lt+"."+t+"."+_uns;
}
return a;
}
function _uTrim(s) {
if (!s || s=="") return "";
while ((s.charAt(0)==' ') || (s.charAt(0)=='\n') || (s.charAt(0,1)=='\r')) s=s.substring(1,s.length);
while ((s.charAt(s.length-1)==' ') || (s.charAt(s.length-1)=='\n') || (s.charAt(s.length-1)=='\r')) s=s.subst
ring(0,s.length-1);
return s;
}
function _uEC(s) {
var n="";
if (!s || s=="") return "";
for (var i=0;i return n;
}
function __utmVisitorCode() {
var r=0,t=0,i=0,i2=0,m=31;
var a=_uGC(_ubd.cookie,"__utma="+_udh,";");
if ((i=a.indexOf(".",0))0) r=a.substring(i+1,i2); else return ""; 
if ((i=a.indexOf(".",i2+1))>0) t=a.substring(i2+1,i); else return ""; 
var c=new Array('A','B','C','D','E','F','G','H','J','K','L','M','N','P','R','S','T','U','V','W','X','Y','Z','1
','2','3','4','5','6','7','8','9');
return c[r>>28&m]+c[r>>23&m]+c[r>>18&m]+c[r>>13&m]+"-"+c[r>>8&m]+c[r>>3&m]+c[((r&7)30&3)]+c[t>>25&m]+
c[t>>20&m]+"-"+c[t>>15&m]+c[t>>10&m]+c[t>>5&m]+c[t&m];
}
function _uIN(n) {
if (!n) return false;
for (i=0;i var c=n.charAt(i);
if ((c"9") && (c!=".")) return false;
}
return true;
}




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