#182 NS4 doesn't bubble events through text

[Richard Bennett]

A new NS4 bug turned up, if a Dynlayer contains text,
it doesn't bubble events to underlying layers through
the text - empty regions of the layer are ok.
See the secondary_inheritance.html example in
the /tests folder :

<wrap>
http://cvs.sourceforge.net/cgi-
bin/viewcvs.cgi/~checkout~/dynapi/dynapi/tests/secondar
y_inheritance.html?rev=HEAD&content-type=text/html

</wrap>