There is ticket open to add macros to the bars, so when you click the bar, it runs the macro you have provided. I don't know that you would be able to cast on them via mouseover. I do not know how that mechanic works in World of Warcraft.
http://wow.curseforge.com/addons/jam...-when-clicked/
You can bind the team window to specific coordinates by holding alt and drag the window with your mouse to your desired location. :-)
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