Use domain value somewhere else

Hello
I need the domain of the site in several other places of my theme. So I have a domain input field in my theme options.

But now with the mapping I have to put the domain once in the mapping settings and once in the theme options.

Is there a way to use the domain that I add in the mapping options in other places of m theme?
Thanks!

http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/