jQuery Grid Plugin - jqGrid

I had downloaded 3.5.1 and played with it. I spend my week end reading jqGrid document and I learned a lot. I got 2 problems:
1 – I used the integrated Search Toolbar sample with a dropdown that get its data from server. It works great, but I wanted also to refresh the data in the toolbar each time that I edit a row, or adding a new record. I couldn’t find any event , I added mygrid.filterToolbar(); and the grid add another row of toolbar with data refreshed, so I reemoved firs then add the Toolbar. $('tr.ui-search-toolbar', 'table.ui-jqgrid-htable').remove();
Is there a better way to refresh dropdwon list in the toolbar?

2 - I set the Edit  form with selecting a ROW. All went well except delete. To delete a row you have to select a Row and in my case selecting a row brings the edit  form. So I decided to add Delete button in the form as well. I could not find a built in function or property to add the button. For this reason I coded a new form.  In afterShowForm event I added the following code:
afterShowForm: function(form) {
            var deletelink = '<a id="dData" class="fm-button ui-state-default ui-corner-all fm-button-icon-left" ';
                            deletelink += 'href="javascript:void(0)"> ';
                            deletelink += 'Delete<span class="ui-icon ui-icon-trash"/></a>';
                            $('td.navButton', 'tr#Act_Buttons').empty().append(deletelink);
// I removed the Previous Next link and add Delete icon and save the current Row Id in a global variable RowID
                            rowID = id;
then I added a live click event to this link:
            $('a[id=dData]').live('click', function() {
                $('div[id=editmodmyList]').remove(); // close the Edit form
                $('div.jqmOverlay').remove(); // remove the overlay
                $('#myList').delGridRow(rowID); // delete the row and reload the delete button works great as expected. I hava little problem.in order to refresh data in the toolbar, I added afterSubmit event of delGridRow, but the code call server to refresh the toolbar, but it doesn’t refresh the grid, nor close the delete form. Am I doing something wrong? I would really appreciate any help to make those requirement, specially if there are easier way to make it. Thanks