how to dynamically change a hotspot attribute

Hello krpano enthusiasts,

I've been recently suggested krpano and I found it fantastic.
I've been played around with it a little bit and I couldn't understand how to do the following.

Suppose one has defined a hotspot with alpha parameter set to 0. This means that the object is invisible. But if it is clicked on, the desired effect is that it become visible with alpha=1.0. So the question is how to dynamically change a hotspot attribute? What's to write in the 'onclick' attribute?

Thanks in advance.

Oh my goodness I figured it out, it is enough just to write set(alpha, 1.0);

Sorry