[flexcoders] Show progress while using for()

[Cato Paus]

Hi all :)

I have a text file that i put into flex. I do some parising on the 
data, I use the for() logic, but I would like to show/use the prgressBar
(i,fileData.length) but it seems the for() have to complete! and then 
all the data just comes in one big bang!