Theming HTML output of filterblock

Issue Summary

Hi All,

I'm trying to get the hang of this whole 'theming' thing but some of the details still escape me. In this case I am trying to theme a filter block. I copied the 'theme_views_filterblock' fcn from the module and with that I've been able to change the attributes of the form fields. What I'm wondering now is how do I go about adding or subtracting HTML. For instance, I would like to remove the fieldset tags and add a div that wraps all of the filters.

Do I make these changes in template.php or do I need to create a tpl file for the specific filterblock? If the latter, where do I find the code to start with as a template?

Thanks for any and all help!

Below is my code from template.php
[code]
/*theming views filter block to change action, add inline styles, and remove collapsed classes*/
function bluemarine_views_filterblock($form) {
$view = $form['view']['#value'];
//JNM is changing the value of the hidden 'q' input field so that the form submits to the 'main' page and also puts 'main' in the url
$form['q']['#value'] = 'main';
// make the 'q' come first
$output = drupal_render($form['q']);

foreach ($view->exposed_filter as $count => $filter) {
$newform["fieldset$count"] = array(
'#action' => "/index.php?q=main",
'#type' => 'fieldset',
'#title' => $filter['label'],
//'#attributes' => array(
//'onBlur'=>'InputLengthCheck()',
//'onKeyUp'=>'InputLengthCheck()'),
'#collapsible' => true,
'#weight' => $count - 1000, // we'll never have this many filters
);
//JNM changing this line to false so default is not collapsed
$newform["fieldset$count"]['#collapsed'] = FALSE;
}

foreach ($form as $field => $value) {
if (preg_match('/(op|filter)([0-9]+)/', $field, $match)) {
$curcount = $match[2];
$newform["fieldset$curcount"][$field] = $value;
if ($newform["fieldset$curcount"][$field]['#value'] == '') {
unset($newform["fieldset$curcount"][$field]['#value']);
}

if (!isset($newform["fieldset$curcount"]['#weight'])) {
$newform["fieldset$curcount"]['#weight'] = $value['#weight'];
}
}
else {
if ($field == 'submit' || drupal_substr($field, 0, 1) == '#') {
unset($curcount);
}
if (isset($curcount)) {
$newform["fieldset$curcount"][$field] = $value;
}
else {
$newform[$field] = $value;
}
}
}

foreach ($view->exposed_filter as $count => $filter) {
if ($filter['is_default']) {
$newform["fieldset$count"]['#collapsed'] = FALSE;
$open = TRUE;
}
else {
$value = $newform["fieldset$count"]["filter$count"]['#default_value'];
if (isset($value)) {
if (is_array($value)) {
foreach ($value as $key => $item) {
if ($item != '') {
$newform["fieldset$count"]['#collapsed'] = FALSE;
$open = TRUE;
}
}
}
elseif ($value != '') {
$newform["fieldset$count"]['#collapsed'] = FALSE;
$open = TRUE;
}
}
}
}
if (!$open) {
$newform["fieldset0"]['#collapsed'] = FALSE;
}
//dprint_r($form);

return $output . theme('views_filterblock_output', $newform);
}
[/code]