[R] colored nodes in dendrogram

[Ondřej Mikula]

Dear list,
is there a way how to add information to internal nodes (branching
points) in dendrogram created via plot.agnes function (package
cluster)?
I wish to place colored circles on the nodes, but I don't know how to proceed...
I'll be grateful for any suggestion
Ondřej

-- 
Ondřej Mikula

Institute of Animal Physiology and Genetics
Academy of Sciences of the Czech Republic
Veveri 97, 60200 Brno, Czech Republic

Institute of Vertebrate Biology
Academy of Sciences of the Czech Republic
Studenec 122, 67502 Konesin, Czech Republic