hmmm... centre aligned text field?
anyway... yea, it'd be good if you could assign the buttons to do different things. eg. the default setup would be button 1: open link, button 2: context menu, button 3: autoscroll. but you could just as easily set left button to open in new window, middle to open in same window etc..
id also like to see support for mice with more than 3 buttons.