Removing the Row Numbers Boxes and not the Header Cells

Is it possible, to remove the Row Number Boxes with out having the header disappear as well?

I am also facing the same problem. If I want to show the summary of data in only 1-Row, Row Number comes, which I don't need.

Any idea how to disable this ?

Just use this

obj.setRowHeaderWidth("0px");

in your script, and the boxes leading each row disappears.

To hide headers use:

obj.setColumnHeaderHeight("1px");

Here, it doesn't work to set value 0px ( dunno why :| ), but 1px goes well for hiding headers.