I've recently developed an application that view a panorama 360 image, using [Panoramagl](http://code.google.com/p/panoramagl/) library for iPhone, and i wanna enhance it and make more features like hotspot.

I've tried to look at a `javascript` code that implement this feature, but it's useless.

**I don't know from where to start implementing this feature and i don't understand the concept of the hotspot. can anyone put me on the right way to start implementing this feature ?**

thx in advance.