Thanks Glen, terrific work! 
However, at the risk of being accused of bad coding practices, what is the problem with declaring a global variable as a local variable? 
eg.
Code:
Global $i ;Global counter for something
Function SomeFunc($par1)
Dim $i ;internal to the function and doesn't change the global $i
For $i = 0 to $par1
;do something
Next
EndFunction
