Enable thumbnail preview when uploading files in Google Chrome/Firefox?

I have google chrome and when I upload photos to Facebook or Imageshack I cannot find a way to show thumbnails, only detail view. I also tried this in Firefox. This is quite important as it is stopping my friend from switching to Ubuntu over Windows.

Included a picture of the File Upload window, how do I change this to a thumbnail view rather than the current list?

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You need to put the cursor on to a file and you will see the thumbnail.

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