dataEvents: [{ type: 'keydown', fn: submitRowData} ]

var submitRowData = function(e) { 
    var key = e.charCode || e.keyCode;
    if (key == 13)//enter
    { 
    jQuery('#grid1').jqGrid('saveRow',globalSelId,true,null,
            successMsgHandler,null,null,null,saveErrHandler);
    }
}