Testing websites on a mac?

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Is there anyway of doing this? (without buying one!)

I'm aware of browsercam, but trying to fix a bug using it could be extremely frustrating and time consuming.

Any ideas?

 

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I tried that link, doesn't seem to work for me. Maybe it's because of the port number.

Here's the link
Not finished, most of the images are just test related. I didn't create the designs, just trying to impliment them.
Simple enough site, but I'm no expert and the client uses a mac - so that makes it even more difficult!