I'm trying to display a customised tooltip for column headers using javascript (show/hide a div with dynamic innertext). I'm adding in extra column headers in the Page_Load dynamically (the column headers have multiple rows)...but the MouseOver event of the grid does not fire when the mouse moves over the dynamically added column header cells...

If the mouse moves over the cells, then it fires with objectType = 0 and if I move over the default column header it fires with objectType = 1...

any help would be much appreciated, thanks heaps!