CSS Validation Error with Lightbox

Getting the following error using W3C Validator:

80 #overlay Parse Error - opacity=60)
81 #overlay Property -moz-opacity doesn't exist : 0.6
82 #overlay Property opacity doesn't exist : 0.6

I am using the stylesheet supplied from Lightbox.
Can anyone help me out with correcting this?

D.

I think you can remove those lines and it will work anyway. Try it at least.

Yeah I tried just removing them after i posted.
Works fine and validates with no problems.

Thanks.