C# - Alternative To OverLibWrapper For Displaying Control Tooltips?

I looked into a nice way to display tooltips dynamically and I found OverLibWrapper, which was exactly what I needed.

I have all the tooltip data stored in a custom configuration section, the tooltips are bound to their respective controls during Page_Load.

I did a quick test and worked fine. The problem came up when I realized that OverLibWrapper didn't work on masterpages. Our website has uses quite a few masterpages, so taking them out isn't an option.

I was wondering if there's anything like OverLibWrapper that I could use.

EDIT:

What I'm looking for is a control to display good-looking tooltips on mouseover preferably instantly like overlib (nothing fancy because I'm just displaying raw text) in a dynamic way, because the tooltip property in ASP.NET is not very pretty and takes a while to appear. For example let's say I have a collection of Messages:

class Message
{
string ctrlid, msgtodisplay;
}

And when the page is loaded:

TooltipManager manager;
foreach(var m in messages)
{
Tooltip tltp=new Tooltip;
m.ControlID=m.ctrlid;
m.Message=m.msgtodisplay;
manager.AddTooltip(tltp);
}

So basically something that offers the functionality of Tooltip and TooltipManager.