On my site I've started messing with subpages and what not, and suddenly I notice that my site menu is trying to display the subpages for a parent page when I hover over it.

I have two problems with this: 1. I intend to have a lot of subpages, so it's not practical for it to display them.
2. It's not displaying correctly. The submenu is getting cut off and only showing the edge of it.

So, I guess I have two question, though one isn't as important as the other. The first being, how do I fix where it's getting cut off? I'm sure it's a CSS problem, but I'm a novice when it comes to that, so I could use a little help figuring out what code is causing the problem.

And secondly, how can I disable a menu's ability to show a submenu for the pages it links to?

(I can provide my site url if needed)

EDIT: Nevermind, I just figured out that I added it to the menu accidently when I created the page.

However, it would be nice to know how to fix my coding incase I ever did want to display a subpage on the menu.