This is because it's not a window or a frame but a DIV that scrolls. It depends on the browser you're using if it supports scrolling by keyboard and mouse scroll wheel.
Regards, Thomas
Martin Marques wrote:
Is something wrong with the message body box. When I select a message to see I can't scroll up or down with the page up and page down keys (arrows don't work else). I have to use the mouse scroll. Is this normal?