hiding functions used only by plugin

plugins/message_details/message_details_bottom.php

@@ -37,6 +37,7 @@ sqgetGlobalVar('onetimepad', $onetimepad, SQ_SESSION);
  * @param string $entString
  * @param integer $direction
  * @return string
+ * @access private
  */
 function CalcEntity($entString, $direction) {
     $result = $entString;

plugins/message_details/setup.php

@@ -15,6 +15,7 @@
 
 /**
  * Initialize the plugin
+ * @access private
  */
 function squirrelmail_plugin_init_message_details()
 {