Go back to <A HREF="http://ha.ckers.org/">the homepage</A>.<BR><BR>

Include the following text in your HTML to see the client's environmental variables:<BR><BR>
<DIV ALIGN="CENTER"><TEXTAREA COLS=45 ROWS=3>Brought to you by &lt;A HREF=&quot;http://ha.ckers.org/&quot;&gt;ha.ckers.org&lt;/A&gt;:&lt;BR&gt;
&lt;SCRIPT SRC=&quot;http://ha.ckers.org/env.js&quot;&gt;&lt;/script&gt;</TEXTAREA><BR></DIV><BR><BR>

Which will appear as:
<BLOCKQUOTE>Brought to you by <A HREF="http://ha.ckers.org/">ha.ckers.org</A>:<BR>
<SCRIPT SRC="http://ha.ckers.org/env.js"></script></BLOCKQUOTE>

<BR>You can access any of the variables in JavaScript space by calling something like the following:<BR>
<BLOCKQUOTE>
&lt;SCRIPT&gt;<BR>
&nbsp;&nbsp;document.write(HTTP_USER_AGENT);<BR>
&lt;/SCRIPT&gt;
</BLOCKQUOTE>

Note: if the environmental variable has anything other than letters and dashes in it, it will be turned into underscores.  Also note I removed the HTTP_REFERER since it will always be whatever page you're calling this from as that's what my server sees (you can call the real referring URL from JavaScript space).