? remove-clear-block.patch
Index: hierarchical_select.css
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/hierarchical_select/hierarchical_select.css,v
retrieving revision 1.31.2.1
diff -u -p -r1.31.2.1 hierarchical_select.css
--- hierarchical_select.css	30 Nov 2008 00:48:34 -0000	1.31.2.1
+++ hierarchical_select.css	1 Feb 2009 01:07:37 -0000
@@ -232,3 +232,16 @@ tr.dropbox-is-empty {
 .hierarchical-select-config-code {
   font-family: 'Monaco', 'Lucida Console', 'Consolas', monospace;
 }
+
+/* Use clear-block here. */
+.hierarchical-select:after {
+  content: ".";
+  display: block;
+  height: 0;
+  clear: both;
+  visibility: hidden;
+}
+
+.hierarchical-select {
+  display: inline-block;
+}
Index: hierarchical_select.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/hierarchical_select/hierarchical_select.module,v
retrieving revision 1.137.2.9
diff -u -p -r1.137.2.9 hierarchical_select.module
--- hierarchical_select.module	2 Dec 2008 18:50:39 -0000	1.137.2.9
+++ hierarchical_select.module	1 Feb 2009 01:07:41 -0000
@@ -456,7 +456,7 @@ function hierarchical_select_process($el
 
   // Render the hierarchical select.
   $element['hierarchical_select'] = array(
-    '#prefix' => '<div class="hierarchical-select clear-block">',
+    '#prefix' => '<div class="hierarchical-select">',
     '#suffix' => '</div>',
   );
   $element['hierarchical_select']['selects'] = _hierarchical_select_process_render_hs_selects($hsid, $hierarchy);