loading partial view containing javascript - asp.net mvc

In one of my View pages I have a asp.net mvc PartialView. The PartialView contains some javascript (and jquery). In my asp.net main View I load the PartialView using ajax, within a div tag, in way given below. That is, from controller I return PartialView("_DonorEdit") and in my main page I use javascript to replace the content of the div tag with the PartialView response.

<div class="content" id="content">
    @{Html.RenderPartial("_DonorEdit");}   
</div>

Everything works fine except the javascript contained in the partialView (_DonorEdit). Thus the question boils down to - How do I have javascript embedded in an div tag and still get it working correctly.

regards, Nirvan.

Edit: This problem occurs only when the partial view is returned from the ajax call. In the above code, if I directly include the PartialView (on non-ajax request), then the javascript works properly. But if I later replace the content of div using ajax request, the javascript included in PartialView does not work. The embedded javascript simply does not appear along with the Partial View. So there seems to be some other reason, why the javascript embedded in Partial View does not get passed to browser after the ajax request success.

Edit2: The part of my javascript code

<script type=...>
//Date Picker. This works. I get Calendar popup as expected

$(document).ready(function () {
    $("#Donor_BirthDate").datepicker({
        dateFormat: "dd-mm-yy",
        changeMonth: true,
        changeYear: true,
        yearRange: "-75:+0"
    });

    $("#Donor_DateLastDonated").datepicker({
        dateFormat: "dd-mm-yy",
        changeMonth: true,
        changeYear: true,
        yearRange: "-20:+1"
    });
});


//Dropdown handler. Does not make it in my final View.

function residenceStateChanged(e) {
    var url = '@Url.Action("_GetCities", "DropDown")';
    var cmbResidenceCityId = $('#ResidenceCityId').data('tDropDownList');
    cmbResidenceCityId.loader.showBusy();

    $.ajax({
        type: 'GET',
        url: url,
        data: { StateId: e.value, AddSelectOption: true, SelectOption: 'Select' },
        traditional: true,
        success: function (resp, textStatus, jqXHR) {
            cmbResidenceCityId.dataBind(resp);
            cmbResidenceCityId.select(0);
            cmbResidenceCityId.trigger.change();
        },
        error: function (jqXHR, textStatus, errorThrown) {
            alert(jqXHR.responseText);
        },
        complete: function () {
            cmbResidenceCityId.loader.hideBusy();
        }
    });
}

....//Some other code omitted. Does not make it in final view.
</script>