Not sure if this information is at all helpful, the page throws below errors when trying to login using facebook (I just copied the errors from Chrome developer tools)
Unsafe JavaScript attempt to access frame with URL
static.ak.facebook.com/connect/xd_arbite...signed_request=4ZxPj ..... TEwNDAifQ&base_domain=dwbiconcepts.com from frame with URL
www.dwbiconcepts.com/. Domains, protocols and ports must match.
Uncaught ReferenceError: jfbcOptionsPermsUrl is not defined
(anonymous function) jfbconnect.js:29
FB.provide.getLoginStatus all.js:38
jfbc.login.login_button_click jfbconnect.js:25
(anonymous function)
FB.provide.invokeHandler all.js:54
FB.subclass._authCallback all.js:81
FB.provide.bind all.js:34
FB.provide.xdResponseWrapper all.js:38
FB.provide._xdRecv all.js:37
FB.provide._xdNextHandler all.js:37
o.register.init.p all.js:23