Joomla 1.6 error

Strict Standards: Declaration of JButtonPopup::fetchId() should be compatible with that of JButton::fetchId() in C:\xampp\htdocs\cms\libraries\joomla\html\toolbar\button\popup.php on line 78

Notice: Undefined index: id in C:\xampp\htdocs\cms\components\com_contact\router.php on line 56
<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>