You can set up web mail so that when you read a message, the menu buttons (Next, Reply, Reply All, Forward, Delete, and Move To) are located only at the top of the page, only at the bottom, or at both the top and bottom (if the message is long).
From the Account Options... menu, select Set My Preferences.
On the User Preferences page, locate Menu buttons in read message screen and select Top, Bottom, or Both.
Click the Save button.