UI Tooltip: tracking and closing in ajax application

UI Tooltip: tracking and closing in ajax application

All,

I have a ajax table editor (MATE) that typically has an header row with a columns caption.
The column caption is clickable to sort the column.
So there is a <a> tag  inside the <td> tag that fires a javascript ajax request to reload the table.

When i add a title attribute to the <td> I see two issues.
1 when i set the tooltip to track the mouse it follows nicely through the table cell until I hit the <a> tag. Then the tooltip goes and stays at the lefthand corner of the tablecell
2 clicking the column caption it fires the ajax request correctly but the tooltip moves to the left corner and stays there for ever. On every hit an extra tooltip is created and I cannot get rid of them unless i reload the entire page

Any clues or hints?

Cheers
Karel