jQuery Grid Plugin - jqGrid

Using jquery 1.3.1, jqgrid 3.4.1, Firefox 3.0.6, Fedora 10 (64-bit)

I was able to get a date picker working within the grid, but not within the 'add' input form.  The code for the add is…

            navGrid(”#pager”,
                {refresh: true, edit: false, add: true, del: true, search: true},
                {beforeSubmit: function() { alert('before edit submit'); } }, // edit
                { // add
                beforeSubmit: function() { alert('before add submit'); return true;},
                onInitializeForm : function(formid) {

                                jQuery(”#invdate”,formid).datePicker({

                                dateFormat:”yymmdd”,
                                clickInput:true,
                                createButton:false,
                                startDate:'2000-01-02'}).
                        addClass('date-pick');    // Mark grid's date fields
                    }
                 },
                { // delete
                beforeSubmit: function() { alert('before delete submit'); }
                }
                );

Firebug tells me the input field on the add input form is….

<input id="invdate" class="FormElement dp-applied date-pick" type="text" name="invdate"/>

which is substantially similar to the working input of the grid…

<input id=”1_invdate“ class=”editable dp-applied date-pick“ type=”text“ style=”width: 98%;“ name=”invdate“/>

The input behaves as if the event is not firing.  That is, clicking on the field performs no obvious action.  What am I doing wrong?

Thanks!