Function to select all checkboxes in the grid

Hi,

I want to select all rows on the click of a button.
Each row has a checkbox appended before it.
I want an event which selects all the checkboxes in the grid.
Thanks,
Piyusha

Try this...

grid.setSelectedRows(function selectAll() {a=new Array; for(i=0;i<grid._rowCount;i++) a.push(i); return a;})

what???