Mega menu in sub-page

Hi,
My mega menu have many menu, pls give a solution for menu ?
Attachment 35360
Br,
Kien

After you enter any category from first page the MegaMenu on the left transforms into the Main Menu that you see. So in your case you have much more MegaMenu categories then in the demo template. So you have 2 options:

1) Either group the products so that you fit the base theme.
2) Folow this thread do what Sherlock Holms posted and you will be fix it. Buy keeping the horizontal menu always as it is.