Parameters of Web CGIs?

I want to modify the web page, but i can’t find a good documentation abaut the parameters of nagios CGIs. For example in side.php there are references like:

/status.cgi?hostgroup=all&style=overview

But i need to know all paramters of that cgi besides hostgroup (and what values can have) and style…
Also i need to create an script that sends html e-mails from those cgi.

Thkz too all intrested in advance. :slight_smile: