Thanks Rutika...Merry Christmas!
As mentioned in point#3, could you please tell me why setTagName is not working. Is there any coding error? If it works for setRowCount during chartobj.draw(), it should work for setTagName either right?
And as per point#5, how to update the chart object after changing the display and/or query properties of chartobj and draw the chart with updated properties?
Also as per point#4, I am unable to understand why it is not displaying the div itself if query template doesn't return any value. It should display "no data" right?
Regards,
Prashant