What ways there is to do right+click using AppleScript? Or maybe control+click?
One option is Extra Suites (http://www.kanzu.com/). You will have to use UI scripting to move the mouse pointer.
Here is another option: http://macscripter.net/viewtopic.php?id=21338 . Seems to work with the Dock too! Instead of clicking an item, ‘perform action “AXShowMenu” of’ the item