Not really, best way to do it would be with GOTOs make the if else yourself
I would do it this way..
CODE
IF NOT expression GOTO :ELSE
Code for TRUE
....
....
GOTO :ENDIF
:ELSE
Code for FALSE
....
....
:ENDIF
that creates the same layout as normal if/else. However it requires IF NOT instead of just IF to work. Hope you understand why.. the correct way to explain evades me.
The other way to do it would be as follows
CODE
IF expression GOTO :IF
IF NOT expression GOTO :ELSE
:IF
TRUE Code
....
....
GOTO :ENDIF
:ELSE
FALSE Code
....
....
:ENDIF
just two ways of writing the same thing.. The 2nd might make more sense at first glance but the 1st is slicker..
Hope this helps

Edit, a variation on the second would be:
CODE
IF expression GOTO :IF
GOTO :ELSE
:IF
TRUE Code
....
....
GOTO :ENDIF
:ELSE
FALSE Code
....
....
:ENDIF
I think thats it for ideas now...