BuddyPress.org

I figured out that there is TEMPLATEPATH available. However when i use TEMPLATEPATH it refers to the absolute path rather than to the relative path on my Server?! Is there anybody who could help me with this?

echo '<a href="' . $bp->root_domain . '"><img id="admin-bar-logo" src="' . apply_filters( 'bp_admin_bar_logo_src', TEMPLATEPATH . '/images/admin_bar_logo.gif' ) . '" alt="' . apply_filters( 'bp_admin_bar_logo_alt_text', __( 'BuddyPress', 'buddypress' ) ) . '" /></a>';