.htaccess redirection to a specific directory
 

I created a website for someone. This time I used Joomla. Because I was playing with it at first I had created /joomla directory on the server and installed joomla in that directory. Now the website is almost ready so I'd like to redirect the / to that directory. It's a third-party hosted website. It's a linux server, but I'm not sure if I have any access to apache config files. I've got a cpanel login details at work. The only thing to play with at the moment is .htaccess

I've tried:
It kind of does the job (it redirects www.domain.com to www.domain.com/joomla), but it was hoping I could get rid of the /joomla part in a browser's address bar so that it'd show www.domain.com and not www.domain.com/joomla.

Is it possible with .htaccess only?

Thank you.

Is mod_rewrite on?

If it is, then:

Thanks. I don't have login details on me again. I'll check it tomorrow.