Cannot expand tree nodes using <t:tree> tag

Hi, I have a question.

I am a beginner of JSF. I am trying to deploy a very simple tree using <t:tree> in my local tomcat server, similar to the following one:

http://www.irian.at/myfaces/tree.jsf

The result is that the tree is properly displayed, but I cannot expand the nodes when I click on the "+" icon of the nodes.

Can someone help me? Thanks a lot!

[391 byte] By [tomtsui_tszkina] at [2007-11-27 11:35:58]