Search Form on Non-VBulletin Page How-To?

[Brett]

The below code works great for guests, but what is the code to get it to work if you're logged in (and/or not logged in)? It appears to be an issue with the securitytoken, receiving this message if logged in: Your submission could not be processed because you have logged in since the previous page was loaded.

CODE WORKS GREAT, EXCEPT IF LOGGED IN:
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<form action="/forums/search.php?do=process" method="post">
<div>
<input type="hidden" name="do" value="process" />
<input type="hidden" name="quicksearch" value="1" />
<input type="hidden" name="childforums" value="1" />
<input type="hidden" name="exactname" value="1" />
<input type="hidden" name="s" value="" />
<input type="text" id="query" name="query" tabindex="1001" class="text" />
<input type="submit" class="button" tabindex="1004" value="Search Forums" class="searchbut" />
<input type="hidden" name="securitytoken" value="guest" />
<input type="hidden" name="showposts" value="1" id="rb_nb_sp0" tabindex="1002" />
</div>
</form>

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Thanks for any feedback you can provide.