office web app in Mac machine

We are having problem with viewing/editing word,excel, ppts in  Safari browser  in Mac system.

It shows blank page for ppt and excel. It shows only content with out top ribbon for word files.

We able to go Mysite, skydrive pro and newsfeed with out any problem. only problem is Office web apps.

We have mac system with below configuration.

Mac OS  Version 10.8.2

Safari Version 6.0.2 (8536.26.17).

we are on latest version than mentioned in below specs.

http://office.microsoft.com/en-au/office365-suite-help/use-my-current-office-for-mac-apps-with-office-365-HA102815270.aspx?CTT=5&origin=HA102817357

It is worse in chrome. It won't open any file..