Feedback widget

The "flying saucer" textbox is a bit odd, but I feel it's more direct than the usual "peeking tab". I'll see how our users like it :)

As usual, all CSS3.

Also, the textbox isn't anchored to the side of the window as usual, and aligns itself off the content. Here's how I did that: http://jsfiddle.net/cemre/b6rkb/1/