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<script type='text/javascript'>
  function submitForm ( formName ) {
...
 onMouseOut = "window.status = ''; return true;"
>Test Link</a>
</form>

<A HREF="http://127.0.0.1/cgi-bin/test.cgi/tom/12/52345">Test Link</A>

my $extra_path_info = $ENV{'PATH_INFO'};
# or
...

print $extra_path_info;
# prints '/tom/12/52345'

<script type='text/javascript'>
  function submit_cookies ( formId ) {
...
  <input type=hidden name='id' value='52345'>
  <a href="#" onClick="submit_cookies('testForm');">Test Link</a>
</form>