Issue with Anchors on sub pages

on my site i'm building on the main page I set up anchors in the menu for post and contact. They work on the home page. But when you go to events page they become inactive. but won't go away or work. And if I change them to become an anchor from the events page for the home page it won't let me. BUt if i change them to point at the home page it removes the anchors i set up on the home page for the same buttons? How Do i fix this?