Shared hosting directory issue

I am hosting a ZC installation for a friend on my godaddy hosting package.

My site is like https://www.mysite.com and his is a folder under that like https://www.mysite.com/hissite. I have his domain set up to automatically go to the subfolder so when you type https://www.hissite.com you get https://www.mysite.com/hissite

All of the functionality seems to be there just fine but you can still see https://www.mysite.com/hissite in the address bar after you click any link in the website or when you mouseover a link the https://www.mysite.com/hissite is shown in the status bar.

How do I convince ZC that it is really seeing https://www.hissite.com and not https://www.mysite.com/hissite?

you need to actually set up the config files this way and you need to make suere that it is an addon domain and not just a redirect

I changed
define('HTTP_SERVER', 'http://mywebsite.com');
define('HTTPS_SERVER', 'https://mywebsite.com');
to
define('HTTP_SERVER', 'http://hissite.com');
define('HTTPS_SERVER', 'https://hissite.com');

and
define('DIR_WS_CATALOG', '/hisfolder/');
define('DIR_WS_HTTPS_CATALOG', '/hisfolder/');
to
define('DIR_WS_CATALOG', '/');
define('DIR_WS_HTTPS_CATALOG', '/');

and all is well!

Thanks!