[Moo] span getParent() error

[Steve Onnis]

I am working on a dropdown menu and i am having issues with the event.target
property of a span element
 
look at these for example
 
http://mooshell.net/PtUx2/1
 
and
 
http://mooshell.net/PtUx2/2
 
In Firefox both of these work as expected but in IE (I am using 7) it errors
suggesting that the span element in IE does not have a getParent() method or
when it runs it returns null
 
Am i missing something?
 
Steve