some simple refactoring


git-svn-id: http://josm.openstreetmap.de/svn/trunk@5681 0c6e7542-c601-0410-84e7-c038aed88b3b
update marker icon for speach (from tango project)


git-svn-id: http://josm.openstreetmap.de/svn/trunk@5682 0c6e7542-c601-0410-84e7-c038aed88b3b