selecting text over multiple text fields

hello.

I have a situation where I have some text split over multiple different text fields (semi explanation over here http://board.flashkit.com/board/show...81#post4076681 (more post #8 than #7)).

The problem I have is this means if I select text in one text field, when I drag the mouse over to the other text fields, their text stays unselected.

I'm wondering if anyone knows of a way to easily select text when you've dragged the mouse from outside the text control into the text control?

maybe create (an invisible) rectangle with the mouse and then somehow make the textfields know if they are been covered by this rectangle and select the text that is covered by the rectangle....
(to make things slightly easier, no text field will have scrollbars)

thankyou for help :)