Facebook Page Requires Our Users To Login First Before Viewing Page?

[Matthew]

Our companies facebook page requires visitors to login to facebook before they can see it. On other sites I've seen it where they have a "Like Us On Facebook" which brings you to there facebook page without the need to login first. I've looked at the code, checked out our facebook account settings and can't find anything that could be doing this. Our site is http://www.renewalbyandersen.com, there facebook link opens right up without any need to login first.
Thanks,
The Facebook link on our site is currently set to:

The link is similar to Renewal's, do I need to do something differently with the link, I noticed some Facebook links have the secure socket https:// instead of the standard http:// ?