refactoring

git-svn-id: http://farmanager.googlecode.com/svn/trunk@11574 ea59307d-ff68-5b67-5a21-acd59c66a581
updated to 3842

git-svn-id: http://farmanager.googlecode.com/svn/trunk@11576 ea59307d-ff68-5b67-5a21-acd59c66a581
check DN_LISTCHANGE

git-svn-id: http://farmanager.googlecode.com/svn/trunk@11577 ea59307d-ff68-5b67-5a21-acd59c66a581