Brains working towards machine consciousness

 I use Drupal here, and also for the LinkSphere project.  The LinkSphere URL is in my institution's domain, and redirects to the site itself.  Most things work fine - but forms do not get the right base URL.  And so far, I haven't been able to figure out why.

At the moment, I get round it using a really dirty hack (complete with hardcoded element of the path - *shudder*)

function theme_form($element) {
  // Anonymous div to satisfy XHTML compliance.
  //For some reason, the base_path is not being used on form generation.  I have hard coded it in here
  //but there were two cases where it *was* being included... so I have checked it isn't already there
  //this should, of course, use the variable, not a hard coded string. (need to figure out how to access it...)
  if (substr($element['#action'],0,11)!='/linksphere')
   $element['#action'] = '/linksphere' .$element['#action'];

  $action = $element['#action'] ? 'action="'. check_url($element['#action']) .'" ' : '';

  return '<form '. $action .' accept-charset="UTF-8" method="'. $element['#method'] .'" id="'. $element['#id'] .'"'. drupal_attributes($element['#attributes']) .">\n<div>". $element['#children'] ."\n</div></form>\n";
}

Which, obviously, is something I really, really shouldn't be doing.  The base_path is configured to include the /linksphere bit, but using the base_path would be excessive (absolute URL) and, what's worse, didn't work.

Even stranger, a couple of the forms *did* pick up the /linksphere part of the URL, which is why I check to see whether it already exists in the action element.  Some more rummaging to be done, methinks.