Javascript pop-up help window?

I'm making a small script that's supposed to let the user scroll over a link and then a help balloon shows with the link's description. For now, I'm using the HTML tag "TITLE" but the balloon will disappear after a few seconds, and some of the descriptions are very long. Is there a way to either make the help balloon stay up until the user moves his/her mouse or to make another message pop up beside the cursor? BTW, the window is very small so the message that pops up would have to be able to be shown outside of the window.

Attached is one of the windows, using my current method. Thanks.

[edit]
The attachment is acting weird because it has a toolbar, but the real one is a small pop-up window.
[/edit]

I am not sure if you can have a mesage show outside the window. it should be stuck to the borders of the window.

you might look into dhtml for this, as title is not cross browser.

I know that the user for this will be in IE because it's for my school, and only the teachers will be using it. I was pretty sure that a message box couldn't be drawn outside of the window's DC. That said, is there any way to make the help balloon stay up for longer or to show it again when it disappears?

yes but you have to use dhtml for it. you can't control the title or alt balloon to stay longer (without moving the cursor)

something like this

http://www.dyn-web.com/dhtml/tooltip.html