--- includes\theme.inc	2008-01-27 14:47:06.000000000 -0500
+++ theme.inc	2008-02-01 14:30:30.453125000 -0500
@@ -1431,6 +1431,14 @@ function theme_item_list($items = array(
       if (count($children) > 0) {
         $data .= theme_item_list($children, NULL, $type, $attributes); // Render nested list
       }
+
+      if ($i & 1) {
+        $attributes['class'] = empty($attributes['class']) ? 'odd' : ($attributes['class'] .' odd');
+      }
+      else {
+        $attributes['class'] = empty($attributes['class']) ? 'even' : ($attributes['class'] .' even');
+      }
+
       if ($i == 0) {
         $attributes['class'] = empty($attributes['class']) ? 'first' : ($attributes['class'] .' first');
       }