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<li><a href="http://code.google.com/apis/analytics/docs/gdata/gdataAuthentication.html">Authorization</a></li>
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<li><a href="http://code.google.com/apis/analytics/docs/gdata/1.0/gdataProtocol.html">Protocol</a></li>
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<h1 class="page_title">Cross-Domain Tracking</h1>
<p>This document describes a variety of ways to use cross-domain tracking customizations
when you want to collect visits to multiple domains in a single profile—as
if they were a single site rather than two separate ones. It also covers how
to track portions of a website, such as sub-directories and iFramed content.
If you are unfamiliar with the general process of cross-domain tracking, see
<a href="http://www.google.com/support/analytics/bin/topic.py?topic=11007">Domains
and Directories</a> in our Help Center.</p>
<table class="columns" id="toc-list">
<tbody><tr>
<td>
<ol class="toc">
<li><a href="#introduction">Introduction</a></li>
</ol>
</td>
<td>
<ol class="toc">
<li><a href="#trackingScenarios">Tracking Scenarios</a>
<ol>
<li><a href="#multipleDomains">Multiple Domains & Sub-Domains</a></li>
<li><a href="#domainSubDomains">One Domain & Its Sub-Domains</a></li>
<li><a href="#domainAndSubDirectory">One Domain & Sub-Directory of Another Domain</a></li>
<li><a href="#trackingIFrames">iFrame Content Hosted on Another Domain</a></li>
<li><a href="#singleSubDirectory">A Single Sub-Directory</a></li>
<li><a href="#twoSubDirectories">Two Directories on the Same Domain</a></li>
</ol>
</li>
</ol>
</td>
<td>
<ol class="toc">
<li><a href="#keyComponents">Key Components to Cross-Domain Tracking</a>
<ol>
<li><a href="#profilesKey">Profiles</a></li>
<li><a href="#cookies">Cookies: Necessary to Transferring Visitor Data</a></li>
<li><a href="#domainToNone">_setDomainName('none')</a></li>
<li><a href="#yourDomainName">_setDomainName('<em>yourDomainName</em>')</a></li>
<li><a href="#setAllowHash">_setAllowHash(false)</a></li>
</ol>
</li>
</ol>
</td>
</tr>
</tbody></table>
<h2 id="introduction">Introduction</h2>
<p>A default setup of Google Analytics is designed to track content and visitor data for a single domain, such as<code> www.example.com</code>.</p>
<p>However, suppose you want to use Analytics for more complex situations, such
as tracking:</p>
<ul>
<li> <strong>Subdomains</strong>—all visitors to <em>both</em> <code>dogs.example.com</code> and <code>www.example.com</code>,
with data for both showing in the same report profile</li>
<li><strong>Subdirectories</strong>—only visitors to the <code>www.example.com/dogs</code> subdirectory
in a separate report as if it were a single site</li>
<li><strong>3rd-party shopping carts</strong>—visitors to your online
store and to your shopping cart hosted on another domain</li>
<li><strong>Top-level domains</strong>—all visitors to two domains that
you own, such as <code>www.example-petstore.com</code> and <code>www.my-example-blog.com</code>,
with data for both showing in the same report profile</li>
<li><strong>IFramed Content</strong>—visitor and pageview data for content
in an iFrame of another domain.</li>
</ul>
<p>In any of these cases, you'll need to do some customization to the tracking
code in order to correctly track visitors. Before doing this, it's a good idea
to read how <a href="http://code.google.com/apis/analytics/docs/concepts/gaConceptsDomains.html">Domains and Directories</a> are treated in a default Analytics installation.</p>
<h2 id="trackingScenarios">Tracking Scenarios</h2>
<p>This section covers a variety of tracking scenarios, ordered by the most popular
methods. </p>
<h3 id="multipleDomains">Tracking Across Multiple Domains and Sub-domains</h3>
<p>In this scenario, you might want to track two unique domains and one sub-domain.
For example, suppose you have an online store and you also want to track visitor
and campaign data to your blog. </p>
<p><img src="08_gaTrackingSite-Dateien/crossDomain.png" alt="Tracking Across Multiple Domains and Sub-Domains"></p>
<p>The following shows key tracking code customizations
for three example URLs.</p>
<ul>
<li><strong>Online Store Domain</strong>: <code>www.<strong>example-petstore.com</strong></code>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setDomainName'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'.example-petstore.com'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowLinker'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">true</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowHash'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">false</span><span class="pun">]);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"http://www.my-example-blogsite.com/intro.html"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">', 'http://www.my-example-blogsite.com/intro.html']); return false;"</span><span class="pun">></span><span class="typ">See</span><span class="pln"> </span><span class="kwd">my</span><span class="pln"> blog</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">', this]);"</span><span class="pun">></span></pre>
</div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setDomainName</span><span class="pun">(</span><span class="str">'.example-petstore.com'</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowLinker</span><span class="pun">(</span><span class="kwd">true</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowHash</span><span class="pun">(</span><span class="kwd">false</span><span class="pun">);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"http://www.my-example-blogsite.com/intro.html"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">('http://www.my-example-blogsite.com/intro.html'); return false;"</span><span class="pun">></span><span class="typ">See</span><span class="pln"> </span><span class="kwd">my</span><span class="pln"> blog</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">(this);"</span><span class="pun">></span></pre>
</div></div>
<p>The only links or form data that you need to customize are those that
point to <code> www.my-example-blogsite.com</code>.
This is not required for links to the sub-domain of this site, since the <code>_setDomainName()</code> function
defined <code>.example-petstore.com</code> as the domain to enable cookie
access for any other subdomains.</p>
</li>
<li><strong>Online Store Subdomain</strong>: <code><strong>dogs</strong>.example-petstore.com</code>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setDomainName'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'.example-petstore.com'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowLinker'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">true</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowHash'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">false</span><span class="pun">]);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"http://www.my-example-blogsite.com/intro.html"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">', 'http://www.my-example-blogsite.com/intro.html']); return false;"</span><span class="pun">></span><span class="typ">See</span><span class="pln"> </span><span class="kwd">my</span><span class="pln"> blog</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">', this]);"</span><span class="pun">></span></pre>
</div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setDomainName</span><span class="pun">(</span><span class="str">'.example-petstore.com'</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowLinker</span><span class="pun">(</span><span class="kwd">true</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowHash</span><span class="pun">(</span><span class="kwd">false</span><span class="pun">);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"http://www.my-example-blogsite.com/intro.html"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">('http://www.my-example-blogsite.com/intro.html'); return false;"</span><span class="pun">></span><span class="typ">See</span><span class="pln"> </span><span class="kwd">my</span><span class="pln"> blog</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">(this);"</span><span class="pun">></span></pre>
</div></div>
<p> Links back to
the primary domain do not need configuration because the sub-domain shares
the same cookies with the primary domain.</p></li>
<li><strong>Blog Domain</strong>: <code>www.<strong>my-example-blogsite</strong>.com</code>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setDomainName'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'my-example-blogsite.com'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowLinker'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">true</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowHash'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">false</span><span class="pun">]);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"http://dogs.example-petstore.com/intro.html"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">', 'http://dogs.example-petstore.com/intro.html']); return false;"</span><span class="pun">></span><span class="typ">See</span><span class="pln"> </span><span class="kwd">my</span><span class="pln"> pet store</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">', this]);"</span><span class="pun">></span></pre>
</div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setDomainName</span><span class="pun">(</span><span class="str">'my-example-blogsite.com'</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowLinker</span><span class="pun">(</span><span class="kwd">true</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowHash</span><span class="pun">(</span><span class="kwd">false</span><span class="pun">);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"http://dogs.example-petstore.com/intro.html"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">('http://dogs.example-petstore.com/intro.html'); return false;"</span><span class="pun">></span><span class="typ">See</span><span class="pln"> </span><span class="kwd">my</span><span class="pln"> pet store</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">(this);"</span><span class="pun">></span></pre>
</div></div>
<p>This configuration sets the domain name to the top-level domain for the
blog site. In this way, if you later add any sub-domains for the blog site,
that sub-domain will be able to share cookies with its parent and you will
not need to set up special linked calls between them. However,
you still must use the <code>_link()</code> and <code>_linkByPost()</code> methods
for any form or links to <code> www.example-petstore.com</code>. </p>
</li>
</ul>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="domainSubDomains">Tracking Across a Domain and Its Subdomains</h3>
<p>As mentioned above, a default setup of Google Analytics is designed
to track content and visitor
data for a single domain, such as www.example.com. This means that even
if you manage both a domain and a sub-domain, you must make modifications to
the tracking code in order to share visitor data across both domains. </p>
<p>Suppose you have the following URLs that you want to track as a single entity:</p>
<ul>
<li><code>www.example-petstore.com</code></li>
<li><code>dogs.example-petstore.com</code></li>
<li><code>cats.example-petstore.com</code></li>
</ul>
<p> For this setup, you would use the following key customizations for the tracking
code on all three domains.</p>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="com">//Tracking code customizations only</span><span class="pln"><br> </span><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br> _gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br> _gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setDomainName'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'.example-petstore.com'</span><span class="pun">]);</span><span class="pln"><br> _gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowHash'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">false</span><span class="pun">]);</span><span class="pln"><br> _gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_trackPageview'</span><span class="pun">]);</span><span class="pln"> </span></pre></div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="pln"> </span><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br> pageTracker</span><span class="pun">.</span><span class="pln">_setDomainName</span><span class="pun">(</span><span class="str">".example-petstore.com"</span><span class="pun">);</span><span class="pln"><br> pageTracker</span><span class="pun">.</span><span class="pln">_setAllowHash</span><span class="pun">(</span><span class="kwd">false</span><span class="pun">);</span><span class="pln"><br> pageTracker</span><span class="pun">.</span><span class="pln">_trackPageview</span><span class="pun">();</span><span class="pln"> </span></pre></div></div>
<p>You will not have to make any adjustments to the links or forms between
these three sites, since they can all share the same cookies due to the fact
that you set the domain name to the top-level domain (e.g., <code>.example-petstore.com</code>).
In this example, notice the use of the leading "." in
the declaration of the domain. Since the Analytics tracking code creates
a hash value from the string that you provide in the <code>_setDomainName()</code> method,
it's recommended that you follow standard conventions and use the leading "." when
setting your domain name in this way. See the documentation on <a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._setDomainName"><code>_setDomainName()</code></a> for
more details. </p>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="domainAndSubDirectory"> Tracking Between a Domain and a Sub-Directory
on Another Domain</h3>
<p>Another common tracking scenario is to track visitor and traffic data between
a single domain and a sub-directory of a different domain.
This might
occur when you want to track traffic between your website and your online
blog, where your blog is limited to a sub-directory of the blog service.
The follow example URLs each contain recommended customizations for the tracking
code on both pages.</p>
<ul>
<li><strong>Main Website Domain</strong>: <code>www.example.com</code>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowLinker'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">true</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setDomainName'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'.example.com'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowHash'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">false</span><span class="pun">]);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"www.blog-hosting-service.com/myBlog"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">', 'www.blog-hosting-service.com/myBlog']); return false;"</span><span class="pun">></span><span class="typ">View</span><span class="pln"> </span><span class="typ">My</span><span class="pln"> </span><span class="typ">Blog</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">', this]);"</span><span class="pun">></span></pre>
</div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setDomainName</span><span class="pun">(</span><span class="str">'.example.com'</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowLinker</span><span class="pun">(</span><span class="kwd">true</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowHash</span><span class="pun">(</span><span class="kwd">false</span><span class="pun">)</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"www.blog-hosting-service.com/myBlog"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">('www.blog-hosting-service.com/myBlog'); return false;"</span><span class="pun">></span><span class="typ">View</span><span class="pln"> </span><span class="typ">My</span><span class="pln"> </span><span class="typ">Blog</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">(this);"</span><span class="pun">></span></pre>
</div></div>
</li>
<li><strong>Blog URL</strong>: <code>www.blog-hosting-service.com/myBlog</code>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setDomainName'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'none'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAllowLinker'</span><span class="pun">,</span><span class="pln"> </span><span class="kwd">true</span><span class="pun">]);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"www.example.com"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">', 'www.example.com']); return false;"</span><span class="pun">></span><span class="typ">View</span><span class="pln"> </span><span class="typ">My</span><span class="pln"> </span><span class="typ">Site</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"_gaq.push(['</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">', this]);"</span><span class="pun">></span></pre>
</div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setDomainName</span><span class="pun">(</span><span class="str">'none'</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setAllowLinker</span><span class="pun">(</span><span class="kwd">true</span><span class="pun">);</span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">a href</span><span class="pun">=</span><span class="str">"www.example-petstore.com"</span><span class="pln"><br>onclick</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._link"><span class="str">_link</span></a><span class="str">('www.example-petstore.com'); return false;"</span><span class="pun">></span><span class="typ">Continue</span><span class="pln"> </span><span class="typ">Shopping</span><span class="pun"></</span><span class="pln">a</span><span class="pun">></span><span class="pln"><br></span><span class="pun">...</span><span class="pln"><br></span><span class="pun"><</span><span class="pln">form name</span><span class="pun">=</span><span class="str">"f"</span><span class="pln"> method</span><span class="pun">=</span><span class="str">"post"</span><span class="pln"> onsubmit</span><span class="pun">=</span><span class="str">"pageTracker.</span><a href="http://code.google.com/apis/analytics/docs/gaJS/gaJSApiDomainDirectory.html#_gat.GA_Tracker_._linkByPost"><span class="str">_linkByPost</span></a><span class="str">(this);"</span><span class="pun">></span></pre>
</div></div>
</li>
</ul>
<p>For any form submission from <code>www.example-petstore.com</code> to the shopping cart website, you would use the<code> _linkByPost()</code> method to copy traffic and visitor cookie data via HTTP POST to the shopping cart site. The <code>_setAllowLinker()</code>
method directs the target site to read cookie data from the POST data
rather than from the regular user session information. In this way, you
can pass cookie data set on one domain to another and thereby retain the
visitor session from your online store to your shopping cart. </p>
<p>Similarly, use the <code>_link()</code> function to transfer visitor data on any links going from the online store to the shopping cart.</p>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="trackingIFrames">Tracking Across iFrames</h3>
<p>In a site where the transfer between domains is done by opening a new window
or by including content in an iFrame, you will need to to use the <code>_getLinkerUrl()</code> method
to transfer visitor and campaign cookies from one domain to another. For example,
suppose you include a form in an iFrame that is hosted on <code> www.my-example-iframecontent.com</code>.
In order to transfer visitor information from the parent page that hosts
the iFrame on <code>www.example-parent.com</code>, you would use JavaScript
to load the iFrame and pass in the cookie information using the <code>_getLinkerURL()</code> method. </p>
<p class="note">The
following example illustrates only the linking function and assumes that <a href="#multipleDomains">cross-domain
tracking</a> is configured in the tracking snippets for both domains. </p>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="pln">_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">(</span><span class="kwd">function</span><span class="pun">()</span><span class="pln"> </span><span class="pun">{</span><span class="pln"><br> </span><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTrackerByName</span><span class="pun">();</span><span class="pln"><br> </span><span class="kwd">var</span><span class="pln"> iframe </span><span class="pun">=</span><span class="pln"> document</span><span class="pun">.</span><span class="pln">getElementById</span><span class="pun">(</span><span class="str">'myIFrame'</span><span class="pun">);</span><span class="pln"><br> iframe</span><span class="pun">.</span><span class="pln">src </span><span class="pun">=</span><span class="pln"> pageTracker</span><span class="pun">.</span><span class="pln">_getLinkerUrl</span><span class="pun">(</span><span class="str">'http://www.my-example-iframecontent.com/'</span><span class="pun">);</span><span class="pln"><br></span><span class="pun">});</span></pre>
</div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> iframe </span><span class="pun">=</span><span class="pln"> document</span><span class="pun">.</span><span class="pln">getElementById</span><span class="pun">(</span><span class="str">'myIFrame'</span><span class="pun">);</span><span class="pln"><br>iframe</span><span class="pun">.</span><span class="pln">src </span><span class="pun">=</span><span class="pln"> pageTracker</span><span class="pun">.</span><span class="pln">_getLinkerUrl</span><span class="pun">(</span><span class="str">'http://www.my-example-iframecontent.com/'</span><span class="pun">);</span></pre>
</div></div>
<h4>Configuring iFrame Tracking for Internet Explorer</h4>
<p>iFramed content that
is hosted in a separate domain from the parent page is regarded as third-party
content. The default privacy setting for Internet Explorer 6 and above
does not allow third-party websites to store cookies on the first-party site. </p>
<p>This means that Analytics tracking for iFramed pages requires special
configuration in order to work in Internet Explorer. For the web pages that
reside in the iFrame, you will need to configure privacy preferences. You can
set up privacy preferences on the hosted pages by using one of the following
methods: </p>
<ul>
<li>include a special "Platform for
Privacy Preferences" (P3P) HTTP header for the included site's pages</li>
<li>provide a P3P XML manifest for the included site's pages</li>
</ul>
<p>For more information, see the following resources:</p>
<ul>
<li>P3P
guides for webmasters:
<ul>
<li><a href="http://www.w3.org/P3P/usep3p.html">http://www.w3.org/P3P/usep3p.html</a></li>
<li><a href="http://evolt.org/node/20756">http://evolt.org/node/20756</a></li>
<li><a href="http://www.p3ptoolbox.org/guide/">http://www.p3ptoolbox.org/guide/ </a></li>
</ul>
</li>
<li><a href="http://support.microsoft.com/kb/323752/EN-US/">Microsoft Knowledge Base article explaining P3P support in IE</a></li>
<li><a href="http://code.google.com/apis/analytics/docs/concepts/gaConceptsCookies.html">Cookies
in Google Analytics</a></li>
</ul>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="singleSubDirectory"> Tracking a Single Subdirectory</h3>
<p>There are two common cases for restricting Analytics tracking to a single sub-directory of a larger domain:</p>
<ul>
<li>You have access only to a sub-directory of a larger website, such as when
you use an ecommerce hosting service.</li>
<li>You want to limit tracking to a sub-directory of a larger website, such
as when you launch a project on your company's website, which also uses Analytics
tracking.</li>
</ul>
<p>Suppose you have a profile in your Analytics account where you track visitor
data to online presence, which is only part of a larger website host (such
as a blogging service). Your site itself is hosted on <code>www.example.com/myBlog/</code>.
You only want to record visitor and campaign data for the <code>/myBlog</code> subdirectory,
and not for any other page on the <code>example.com</code> domain. In this
case, you also only have access to those web pages included in that sub-directory. </p>
<p>In order to set up tracking for your store, you will need to use the <code>_setCookiePath()</code> function in your tracking code, like this:</p>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="com">//Tracking Code Customizations Only</span><span class="pln"><br></span><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setCookiePath'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'/myBlog/'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_trackPageview'</span><span class="pun">]);</span><span class="pln"> </span></pre></div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) ayntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="com">//Tracking Code Customizations Only</span><span class="pln"><br></span><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_setCookiePath</span><span class="pun">(</span><span class="str">"/myBlog/"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_trackPageview</span><span class="pun">();</span><span class="pln"> </span></pre></div></div>
<p>Once this is set up, your reports will correctly display visitor
and campaign data only for your sub-directory. This is because the
cookie path is set to your sub-directory rather than to the root
directory of <code>www.example.com</code> and your profile will read and write to a unique set of cookies for your store only.</p>
<p>It is considered a best practice to use the <code>_setCookiePath()</code> function in this scenario. If you do not, there are two possible impacts to your reports:</p>
<ul>
<li><strong>Other Analytics account cookies set on <code>www.example.com</code> can be shared by your account</strong>.
<p>This means that visitor statistics like <code>new vs returning</code>, <code>time on site</code>, and <code>number of visits</code> might be incorrect, since your visitors' session cookies might also reflect activity on other parts of <code>www.example.com</code>. </p></li>
<li><strong>Your reports might reflect campaign details from another part
of the site.</strong>
<p>For example, suppose a visitor clicks on an email campaign that goes
to another site on the same domain: <code>www.example.com/theirBlog</code>.
In this case, the referral information in the visitor's cookie is set
to the campaign named <em>Latest News on Blogging</em>. Later, that same
visitor searches on Google and clicks on a search result
to your site and purchases a subscription to your blog. Since ad and
email campaign referrals persist over search results, you will see the
campaign <em>Latest News on Blogging </em> generating sales for your
subscription. This is because the <code>_utm</code>z
cookie for your online store was not set uniquely for your path.</p></li>
</ul>
<p>If you restrict visitor cookies to only your path, campaign and session data for another part of <code>www.example.com</code> will not be included in your reports, since the cookie path is restricted. (Read about <a href="http://code.google.com/apis/analytics/docs/concepts/gaConceptsCookies.html">Cookies</a> for more background info on how cookies are read by web browsers.)</p>
<h4 class="note">Other Subdirectory Tips</h4>
<ul>
<li>If you are tracking visitor and referral traffic for a sub-directory, you might also want to set up an <em>Include</em> filter to the sub-directory to ensure that only content for that sub-directory shows up in your report. See the <a href="http://www.google.com/support/analytics/bin/answer.py?hl=en&answer=55496">pre-defined filter</a> article in the Help Center for more information.</li>
<li>If you are setting up sub-directory tracking on your domain, you should
also ensure that Analytics tracking is disabled for the root path (e.g.
<code>/</code>) and any pages beneath it. For example, <code>www.example.com/index.html</code> should
not have Analytics tracking enabled if you want to track subdirectories
for the site separately. If tracking for the root path is not disabled,
2 sets of cookies will be set for a page where you have set up path-level
tracking, one set for the subdirectory and one set for the top-level domain. </li>
</ul>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="twoSubDirectories">Tracking Across Two Sub-directories on the Same Domain</h3>
<p>You might want to track multiple subdirectories on a domain where
you do not have access to the pages for the larger domain. For example,
suppose you have both an online store and a shopping cart on a service
provider's site:</p>
<ul>
<li><code>www.example-commerce-host.com/myStore/</code></li>
<li><code>www.example-commerce-host.com/myCart/</code></li>
</ul>
<p>If you want to track user sessions and campaign data from your store to
the shopping cart, you would use two methods to achieve this:</p>
<ul>
<li>the <code>_setCookiePath()</code> method, which <a href="#singleSubDirectory">limits tracking to a
specific directory</a></li>
<li>the <code>_cookiePathCopy()</code> method, which copies the cookie information
to another directory on the same domain</li>
</ul>
<p>The example below shows the key parts of the tracking code
snippet for all pages:</p>
<div class="tog-box tog-expanded">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/minus_sm.gif"><strong>Asynchronous syntax</strong></p>
<div class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> _gaq </span><span class="pun">=</span><span class="pln"> _gaq </span><span class="pun">||</span><span class="pln"> </span><span class="pun">[];</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_setAccount'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'UA-12345-1'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'</span><strong><span class="str">_setCookiePath</span></strong><span class="str">'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'/myStore/'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'_trackPageview'</span><span class="pun">]);</span><span class="pln"><br>_gaq</span><span class="pun">.</span><span class="pln">push</span><span class="pun">([</span><span class="str">'</span><strong><span class="str">_cookiePathCopy</span></strong><span class="str">'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'/myCart/'</span><span class="pun">]);</span></pre></div></div>
<div class="tog-box">
<p class="tog-header"><img class="tog-img" src="08_gaTrackingSite-Dateien/plus_sm.gif"><strong>Traditional (ga.js) syntax</strong></p>
<div style="display: none;" class="tog-content">
<pre class="prettyprint"><span class="kwd">var</span><span class="pln"> pageTracker </span><span class="pun">=</span><span class="pln"> _gat</span><span class="pun">.</span><span class="pln">_getTracker</span><span class="pun">(</span><span class="str">"UA-12345-1"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><strong><span class="pln">_setCookiePath</span></strong><span class="pun">(</span><span class="str">"/myStore/"</span><span class="pun">);</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><span class="pln">_trackPageview</span><span class="pun">();</span><span class="pln"><br>pageTracker</span><span class="pun">.</span><strong><span class="pln">_cookiePathCopy</span></strong><span class="pun">(</span><span class="str">"/myCart/"</span><span class="pun">);</span></pre></div></div>
<p> In this case, a unique cookie is set for the domain, limited to the first
directory provided, and the same cookie data is also copied over to the second
directory provided. Because both sites reside on the same domain, you will
not need to alter any links or form data between the two directories.</p>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h2 id="keyComponents">Key Components to Cross-Domain Tracking</h2>
<p>This section will help you troubleshoot your cross-domain tracking setup by
providing detailed information on the key components and how best to use them.</p>
<h3 id="profilesKey"> Profiles</h3>
<p>When you set up cross-domain tracking, you will want to make sure you do the
following with your profiles:</p>
<ul>
<li><strong>Set up a master profile for your primary domain without filters</strong>.<br>
<br>
Because you'll want to use profiles
in a special way, for cross-domain tracking, it's first recommended that you
set up a master profile for your primary domain. This profile should have no
filters added to it. In this way, you will always have
baseline historical data for your primary domain that you can refer to if you
make errors when setting up filters in your cross-tracking profile. <br>
<br>
</li>
<li><strong>Create a profile especially for cross-domain tracking and re-use
your tracking code</strong>.<br>
<br>
After you
have set up a profile and retrieved the tracking code for your primary domain,
use the same tracking code for all other web properties. In this way, your
configuration will be set up correctly <em>before</em> you start cross-domain
tracking and you will also have historical data for all web properties. If
you followed the recommendation for setting up master profiles, this should
be simply a matter of creating an additional profile for your primary domain
using the same tracking code provided in the master profile. All other web
properties that you want to link should also have the same tracking code on
them. <br>
<br>
</li>
<li><strong>Modify your cross-domain profile with a filter to show the full domain
in your content reports.</strong><br>
<p>Once you have domain linking established, you will see only the request
URI in the content reports, and not the top-level or sub-domain for a given
page. So for example, for visits to the following pages:<br>
— <code>http://www.example.com/index.php</code> and
another page on<br>
— <code>http://sub.example.com/more.php</code><br>
The reports will show:<br>
— index.php<br>
— more.php<br>
You will not be able to distinguish which page is from which domain. To show
the domain in the page reports, set a filter to include all components
of the page URL, as follows:</p>
<ol>
<li>In the <strong>Profile Settings</strong> page, click the <strong>Add Filter</strong> link.</li>
<li>Choose <strong>Add New Filter</strong> and provide the filter a name.</li>
<li>Choose <em>Custom Filter</em> and select <em>Advanced</em> on the <strong>Filter type</strong> settings.</li>
<li>Under <strong>Advanced</strong> settings:
<ol>
<li><strong>FieldA</strong> should be set to <em>Hostname</em></li>
<li><strong>FieldB</strong> should be set to <em>Request URI</em></li>
</ol>
</li>
<li>Set the values for both Field A and Field B to <code>(.*)</code>, which is
an expression that captures all characters.</li>
<li>Set the <strong>Output To --> Constructor</strong> option to <em>Request URI</em> and provide <code>$A1$B1</code> as the value for that choice.</li>
</ol>
<p><strong>Your reports will now show:<br>
— <code>www.example.com/index.php</code><br>
— </strong><code>sub.example.com/more.php</code><br>
This will capture the <code>www.example.com</code> portion of your URL and
include that at the beginning of your page URL in the content reports section.</p>
</li>
</ul>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="cookies">Cookies: Necessary to Transferring Visitor Data</h3>
<p>In order for two domains to share the same visitor data, such as
session and visitor type, they must be able to copy or share the same
cookie information. In addition, you should remember:</p>
<blockquote> <strong>A session from one domain can only be transferred to another domain via a properly configured click or form submission, or via <code>_getLinkerURL</code></strong>. </blockquote>
<p>The passing of the cookie data via these three methods links two page
views under a single session. If a user independently visits two sites
that are tracking in the same profile, such as through a bookmark, these
visits will still be counted under separate sessions. In this scenario,
the linking methods are not invoked, and thus there is no way to
determine the initiating session for a given user.</p>
<p>To really understand cross-domain tracking, it helps to understand
that cookies are identified by a number of fields and that they are not
shared between domains by default. In addition, cookie sharing is
automatically turned off in Analytics. This is because in many cases,
sharing of the same cookie between domains is undesirable. See <a href="http://code.google.com/apis/analytics/docs/concepts/gaConceptsCookies.html#significanceOfName">Significance of Cookie Identification and Expiration</a> in the <em>Cookie Reference</em>. In addition, Analytics adds an additional integrity check to cookies by default. </p>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="domainToNone">_setDomainName('none')</h3>
<blockquote><strong>What it does.</strong><br>
This method sets the domain field of the cookie to <code>document.domain</code> and
turns off the unique hash feature, which then allows cookies stored under
different domains to read/write each other's data (see <a href="http://code.google.com/apis/analytics/docs/concepts/gaConceptsCookies.html#significanceOfName">Cookies
& Google Analytics</a> for details). This method is a convenience
mechanism that accomplishes two steps in one. When you apply this method,
a separate set of cookies is created for any unique domain or sub-domain
that uses it. In order to share cookie data with this method, you must also
customize every link or form that connects any two websites that use this
method.</blockquote>
<blockquote><strong>When to use it.</strong><br>
When tracking across top-level domains when you will use linker
methods to share visitor data and you don't plan to use any sub-domain for
the top-level domain. </blockquote>
<blockquote><strong>When not to use it.</strong><br>
When tracking across sub-domains, because you will then have to use linker methods
to share data from the primary to the sub-domain, and you can easily avoid
this by setting the domain name to the top-level domain, thus only creating
a single set of cookies shared by both top- and sub-domains.</blockquote>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="yourDomainName">_setDomainName('.<em>yourDomainName</em>')</h3>
<blockquote><strong>What it does.</strong><br>
This method sets the domain field of the cookie to the string provided in the
parameter. <span id="internal-source-marker_0.8156747782483427">With this method,
you can control the domain name, but then you must also use <code>_setAllowHash(false)</code> in
your configuration to enable cookie data sharing between different domains. You
will ONLY have to set up linking between top-level domains because sub-domains
will share the same cookies with their parents.</span></blockquote>
<blockquote><strong>When to use it.</strong><br>
<span id="internal-source-marker_0.">Use this when you want to treat top- and
sub-domains as one entity and track in the same profile. Also use this when
you want to track across multiple top-level domains AND their sub-domains.
You will have to use <code>_setAllowHash(false)</code> when you use this method. In
this case, you will need to using linking between the top-level domains, but
not between the top-level domains and their sub-domains.</span></blockquote>
<blockquote><strong>When not to use it.</strong><br>
<span id="internal-source-marker_0.2">When you prefer to use the convenience
of <code>_setDomainName('none')</code>, which also calls <code>_setAllowHash(false)</code> for
you. </span></blockquote>
<div align="right"><a href="#top" class="backtotop">Back to Top</a></div>
<h3 id="setAllowHash">_setAllowHash(false)</h3>
<blockquote><strong>What it does.</strong><br>
This method turns off the hashing feature in Google Analytics, which provides
a unique numeric string in the <em>Content</em> field of the cookie for the
set of Analytics cookies for a given user. When you use this method, it sets
the value of the <em>Content</em> field to <code>1</code>.</blockquote>
<blockquote><strong>When to use it.</strong><br>
When using <code>_setDomainName()</code> configured to your particular top-level domain. </blockquote>
<blockquote><strong>When not to use it.</strong><br>
When calling <code>_setDomainName('none')</code>, because then this method is redundant.</blockquote>
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