jQuery Grid Plugin - jqGrid

Hello,

Pardon me if this was asked before, I tried to look for a solution, but couldn't find one. 

I want inline editing and also the ability to add/delete rows. But I want all these to be done locally without making a server request, since I am planning to do the posting together at the end. 

But the problem I am facing is that, each time I add a new row, it gives an error "No url set". I have 'loadonce' set to 'true'. Also 'cellsubmit' and 'data' are set to 'clientSide' and 'local' resp.  But this doesn't seems to be working

How can I stop the JQGrid to posting data to server, but do all the updates on the local itself.

Thanks,

Sudev