Issue #1244458: Better handling for the date format descriptions

date_popup/date_popup.module

@@ -441,15 +441,11 @@ function date_popup_process_date_part(&$element) {
     '#ajax' => !empty($element['#ajax']) ? $element['#ajax'] : FALSE,
     '#required' => $element['#required'],
   );
+
   // Do NOT overwrite the actual input with the default value.
-  // @todo Figure out exactly when this is needed, in many places it is not.
-  $sub_element['#description'] = ' ' . t('E.g., @date', array(
-    '@date' => date_format_date(
-        date_example_date(),
-        'custom',
-        date_popup_date_format($element)
-    ),
-  ));
+  if (!isset($element['#description'])) {
+    $sub_element['#attributes']['placeholder'] = date_format_date(date_example_date(), 'custom', date_popup_date_format($element));
+  }
 
   return $sub_element;
 }