Got problem with menu..anyone can help me?

i have the problem with my as for menu…i hope someone can help me to solve this.

i have 6 main button. when u rollover one of the buttons. the blue bar will follow ur mouse where u point it.

[color=red]the problem is:[/color]
when i rollover the “ABOUT US” button. the [color=red]sublink[/color] for the “ABOUT US” not appear.

fla file: http://www.propertyzoom.com/kai_entry/menu.zip

anyone can help me check with the ac…i did not know where is wrong?!
Thanks

scotty:

i had tried it but still cannot…do u mind to add the script in the fla file for me. i think i add it in the wrong place…