Classe selnbox - Gained Focus Event (Net Express 3.1).

Hi.

I put a Selection Box in runtime using the "selnbox" class.
I have defined for this object the GainFocus (p2ce-gainfocus) and LoseFocus (p2ce-losefocus) events.
This events do not occurs when i use mouse, only when i use TAB KEY.
The GainFocus occurs 2 times for the SelectionBox.
If I am in selection box and set focus on a entry field, for exemple, on selection box occurs the GaindFocus, the LoseFocus and GaindFocus again.

Why?
Have a solution?

Thanks in advance,

Antonio João

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Brasil.