if ( !function_exists('bp_addgravatar') ) {
	function bp_addgravatar( $avatar_defaults ) {
		$myavatar = get_bloginfo('template_directory') . '/images/avatar.gif';
		$avatar_defaults[$myavatar] = 'buddypress default';
		$myavatar2 = get_bloginfo('template_directory') . '/images/myavatar.png';
		$avatar_defaults[$myavatar2] = 'my special avatar';
		return $avatar_defaults;
	}
	add_filter( 'avatar_defaults', 'bp_addgravatar' );
}