So I am using twitter bootstrap for one of my latest projects... My client uses a Mac computer and when I showed him the demo, he said it would be cool if the buttons could flow with the operating system.

I was curious if anyone knew how to detect an operating system using JavaScript and move the buttons on the in the model to the left instead of the right. Also I would like to be able to move the close button to the left as well.

I remember seeing a theme that does this, but for the life of me can not find it.

Thanks for any help you can provide.