Row that spans all columns

I have a "notes" filed in mydatbase, and i wanted to display the reocrds in the gird like this

id,name, other field
notes

so my records with they are displayed in the grid first show the record, then the next record is the notes to that record, but it should pan multiple columns

id,name, other field
notes (spans 3 columns)
id,name, other field
notes (spans 3 columns)

This is not possible with AW grid. Maybe you can do it with a floating popup div (visible on row click or mouseover).