Search box displaying but not working

I'm trying to get Pico search to work on my page but while the search form is displaying correctly, you can't use it. The submit button isn't clickable and you can't type anything on the search box either. Can someone tell me what I did wrong? Thanks a lot!

<div id="header">
<div id="searchform">
<!-- Begin PicoSearch Query Box -->
<form style="margin:0;" method="get" class="search"
action="http://www.picosearch.com/cgi-bin/ts.pl" value="hidden" name="index" value="440030"/>
<input type="text" name="query" value="" size="20" />
<input type="submit" value="Search" name="search" /><br /></form>
<!-- End PicoSearch Query Box -->
</div>

There are 2 value attributes in form.
This is not the source of the problem, a link or complete document is required to track down the error.
I suspect another element is overlayed over the form.

I got it. I had to take the whole code outside the div layer. Thanks!