Display positive and negative values in different column

Question

Here, I have one Table T1.

In that table, I have one column F1 having some positive and negative values.

I want to display those values in two different columns. 

 

select * from T1 

 

F1

--------

1000

-2000

500

-1000

2000

-300

 

I want to display like this 

 Pos           Neg 

-------          ------

 1000         -2000

 500           -1000

 2000         -300

 

How to do this any suggestion?