Thank you very much your solution occurred to me, I'll try it but my solution works well and no slowdown see it.

set.visibility(false) == colision off .. true?
Thanks but I've found a solution here, I have to turn off the effect of light on the subject
   border.setLighting(Object3D.LIGHTING_NO_LIGHTS);

ps:zdravim krajana

Hello all.. I create little game and I do not know how to make invisible collide border...    If i set border.setTransparency(0) or -1
object is transparent but still visible....
Please help (sorry for my english)