grid header tool tip

Hi.
I was trying to add tooltips to my grid (header only). Is there a simple way (API) for doing this (in same fashion like ‘setInitWidths’ or ‘setColAlign’).All I found is it could be done via ‘onMouseOver’ event but it doesn’t get fired on header at all?

the only way is to place the html element with the needed tooltip in the header of the column.
For example:

mygrid.setHeader("<div title='tooltip'>value of the column</div>,2nd column");

This is what I was looking for:
viewtopic.php?f=14&t=11792