=== modified file 'misc/form.js'
--- misc/form.js	2008-12-06 09:01:58 +0000
+++ misc/form.js	2009-01-21 13:48:50 +0000
@@ -10,3 +10,19 @@ Drupal.behaviors.multiselectSelector = {
     });
   }
 };
+
+
+Drupal.behaviors.filterGuildelines = {
+  attach: function (context) {
+  // Automatically displays the guidelines of the selected input format.
+    $('.filter-guidelines:not(.filterGuidelines-processed)', context)
+      .addClass('filterGuidelines-processed')
+      .parents('.filter-wrapper').find('select.filter-list')
+      .bind('change', function() {
+        $(this).parents('.filter-wrapper')
+        .find('.filter-guidelines-item').hide()
+        .siblings('#filter-guidelines-' + this.value).show();
+      })
+      .change();
+  }
+};

=== modified file 'modules/filter/filter.module'
--- modules/filter/filter.module	2008-12-30 17:00:08 +0000
+++ modules/filter/filter.module	2009-01-21 13:58:00 +0000
@@ -60,6 +60,9 @@ function filter_theme() {
     'filter_tips_more_info' => array(
       'arguments' => array(),
     ),
+    'filter_guidelines' => array(
+      'arguments' => array('format' => NULL),
+     ),    
   );
 }
 
@@ -481,45 +484,45 @@ function check_markup($text, $format = F
 function filter_form($value = FILTER_FORMAT_DEFAULT, $weight = NULL, $parents = array('format')) {
   $value = filter_resolve_format($value);
   $formats = filter_formats();
-
-  $extra = theme('filter_tips_more_info');
-
-  if (count($formats) > 1) {
-    $form = array(
-      '#type' => 'fieldset',
-      '#title' => t('Input format'),
-      '#collapsible' => TRUE,
-      '#collapsed' => TRUE,
-      '#weight' => $weight,
-      '#element_validate' => array('filter_form_validate'),
-    );
-    // Multiple formats available: display radio buttons with tips.
+  
+  $form = array(
+   '#type' => 'fieldset',
+   '#weight' => $weight,
+   '#attributes' => array('class' => 'filter-wrapper'),
+  );
+   
+  if ($formats_count = count($formats)) {
     foreach ($formats as $format) {
-      // Generate the parents as the autogenerator does, so we will have a
-      // unique id for each radio button.
-      $parents_for_id = array_merge($parents, array($format->format));
-      $form[$format->format] = array(
-        '#type' => 'radio',
-        '#title' => $format->name,
+      $options[$format->format] = $format->name;
+      $guidelines[$format->format] = array('#markup' => theme('filter_guidelines', $format));
+    }
+    $element_id = form_clean_id('edit-' . implode('-', $parents));
+    if ($formats_count > 1) {
+      drupal_add_js('misc/form.js');
+      $form['format'] = array(
+        '#type' => 'select',
+        '#title' => t('Formatting'),
+        '#options' => $options,
         '#default_value' => $value,
-        '#return_value' => $format->format,
         '#parents' => $parents,
-        '#description' => theme('filter_tips', _filter_tips($format->format, FALSE)),
-        '#id' => form_clean_id('edit-' . implode('-', $parents_for_id)),
+        '#id' => $element_id,
+        '#attributes' => array('class' => 'filter-list'),
       );
     }
+    else {
+      $form['format'] = array(
+        '#type' => 'value',
+        '#value' => $value,
+        '#parents' => $parents,
+        '#id' => $element_id,
+      );
+      $form['format_label'] = array(
+        '#markup' => '<span class="filter-label">Formatting: ' . "</span>\n",
+      );
+    }
+    $form['format_help'] = array('#markup' => '<div id="'. $element_id .'-help" class="filter-help">'. theme('filter_tips_more_info', TRUE) .'</div>');
+    $form['format_guidelines'] = array_merge($guidelines, array('#prefix' => '<div id="'. $element_id .'-guidelines" class="filter-guidelines">', '#suffix' => '</div>'));
   }
-  else {
-    // Only one format available: use a hidden form item and only show tips.
-    $format = array_shift($formats);
-    $form[$format->format] = array('#type' => 'value', '#value' => $format->format, '#parents' => $parents);
-    $tips = _filter_tips(variable_get('filter_default_format', 1), FALSE);
-    $form['format']['guidelines'] = array(
-      '#title' => t('Formatting guidelines'),
-      '#markup' => theme('filter_tips', $tips, FALSE),
-    );
-  }
-  $form[] = array('#markup' => $extra);
   return $form;
 }
 
@@ -585,8 +588,23 @@ function _filter_tips($format, $long = F
  *
  * @ingroup themeable
  */
-function theme_filter_tips_more_info() {
-  return '<p>' . l(t('More information about formatting options'), 'filter/tips') . '</p>';
+function theme_filter_tips_more_info($icon = FALSE) {
+  if ($icon) {
+    $description = t('More information about formatting options');
+    return l(theme('image', 'misc/help.png', $description, $description), 'filter/tips', array('html' => TRUE));
+  }
+  else {
+    return '<p>'. l(t('More information about formatting options'), 'filter/tips') .'</p>';
+  }
+}
+
+/**
+ * Format guidelines for an input format.
+ *
+ * @ingroup themeable
+ */
+function theme_filter_guidelines($format) {
+  return '<div id="filter-guidelines-'. $format->format .'" class="filter-guidelines-item"><label>'. $format->name .':</label>'. theme('filter_tips', _filter_tips($format->format, FALSE)) .'</div>';
 }
 
 /**

=== modified file 'modules/node/node.css'
--- modules/node/node.css	2008-12-06 09:01:58 +0000
+++ modules/node/node.css	2009-01-21 13:48:50 +0000
@@ -42,3 +42,6 @@ td.revision-current {
 .terms-inline {
   display: inline;
 }
+.filter-label {
+  font-weight: bold;
+}