Index: modules/project/project.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/project/project.module,v
retrieving revision 1.239.2.13.2.24
diff -u -p -r1.239.2.13.2.24 project.module
--- modules/project/project.module	18 Dec 2006 06:46:32 -0000	1.239.2.13.2.24
+++ modules/project/project.module	19 Dec 2006 00:24:46 -0000
@@ -390,20 +390,9 @@ function project_page_overview($termname
 
   if (module_exist('project_release') && variable_get('project_release_browse_versions', 0)) {
     // Read in requested version, if any.
-    if ($_POST['edit']['version_tid']) {
-      $version = $_POST['edit']['version_tid'];
-    }
-    else if ($_SESSION['project_version']) {
-      $version = $_SESSION['project_version'];
-    }
-    else {
-      $version = variable_get('project_release_overview', -1);
-    }
+    $version = isset($_SESSION['project_version']) ? $_SESSION['project_version'] : variable_get('project_release_overview', -1);
     $form = project_release_version_filter_form($version);
     $version_form = drupal_get_form('project_release_version_filter_form', $form);
-    if ($_POST['edit']['version_tid']) {
-      $_SESSION['project_version'] = $form_values['version_tid'];
-    }
     $output .= $version_form;
   }
 
Index: modules/project/release/project_release.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/project/release/project_release.module,v
retrieving revision 1.1.2.55
diff -u -p -r1.1.2.55 project_release.module
--- modules/project/release/project_release.module	18 Dec 2006 06:46:33 -0000	1.1.2.55
+++ modules/project/release/project_release.module	19 Dec 2006 00:24:47 -0000
@@ -787,17 +787,26 @@ function project_release_compatibility_l
  */
 function project_release_version_filter_form($version) {
   if ($terms = project_release_compatibility_list()) {
+    if (is_null($version)) {
+      $version = isset($_SESSION['project_version']) ? $_SESSION['project_version'] : variable_get('project_release_overview', -1);
+    }
     $form['version_tid'] = array(
       '#type' => 'select',
       '#default_value' => $version,
       '#options' => $terms,
     );
     $form['submit'] = array(
-      '#type' => 'button',
+      '#type' => 'submit',
       '#value' => t('Go')
     );
   }
-  return $form;
+  return isset($form) ? $form : '';
+}
+
+function project_release_version_filter_form_submit($form_id, $form_values) {
+  if (isset($form_values['version_tid'])) {
+    $_SESSION['project_version'] = $form_values['version_tid'];
+  }
 }
 
 function theme_project_release_version_filter_form($form) {