jQuery Grid Plugin - jqGrid

When user selects a row, the "edit & del" actions will be available on the navGrid. I did it using onSelectrow but the navGrid is not changing. Am i missing out something?

$('#myGrid').jqGrid({

    url: '/edit',

    datatype: 'json', 

    …………..

    onSelectRow: function(rowid, status) {

                             $('myGrid').jqGrid('navGrid', '#pager', {edit: true, add: true, del:true});

                         }, 

    closeAfterEdit: true, 

    pager: '#pager'

}).navGrid('#pager', {add: true, edit:false, del:false);

And how do i close the form after submitting. I set closeAfterEdit to true, but its still not closing.