Event is not attach in Sharepoint

[hashmi1977]

Hi there,

I am not able to see Sub Menu item on Mouse Hover on Menu item after begging on Crome I founded control is not going to ActivateSubmenu function which I think is not attached.
When I am using this example with Sharepoint development.

While debugging I have got error while attaching events to be fired on menu row activation
Error is as follow:
"Uncaught Type Error: undefined is not a function"

$menu.menuAim({
activate: activateSubmenu,
deactivate: deactivateSubmenu
});

Looking forward for some solution