Separate javascript files with shared cshtml views in MVC3

if (typeof Mvcdemo_post_send === 'undefined') Mvcdemo_post_send = {};
Mvcdemo_post_send.common = {
    PostData: function (requestUrl, dataStringified, options, onSuccess, onError) {
        var ajaxOptions = $.extend({}, Mvcdemo_post_send.common.DefaultOptions, options);
        $.ajax({
            cache: ajaxOptions.cache,
            type: 'POST',
            url: requestUrl,
            data: dataStringified,
            contentType: ajaxOptions.contentType,
            dataType: ajaxOptions.dataType,
            success: onSuccess,
            error: onError
        });
    },
    GetData: function (requestUrl, dataStringified, options, onSuccess, onError) {
        var ajaxOptions = $.extend({}, Mvcdemo_post_send.common.DefaultOptions, options);
        $.ajax({
            cache: ajaxOptions.cache,
            type: 'GET',
            url: requestUrl,
            data: dataStringified,
            contentType: ajaxOptions.contentType,
            dataType: ajaxOptions.dataType,
            success: onSuccess,
            error: onError
        });
    }
}       
    }
Mvcdemo_post_send.common.DefaultOptions = {
    cache: false,
    contentType: 'application/json; charset=utf-8',
    dataType: 'json'
}

if (typeof Mvcdemo_post_send === 'undefined') Mvcdemo_post_send = {};
//Mvcdemo_post_send.calculation = (function () {
$('#Submit1').live('click', function (e) {
    var fisrtNumber = $('#txtfirstno').val();
    var secondNumber = $('#txtsecondno').val();
    var params = '{fisrtNumber=:' + fisrtNumber + '&secondNumber=' + secondNumber+'}';
//        Mvcdemo_post_send.common.showalert();
    Mvcdemo_post_send.common.GetData("Home/AddNumbers", params, null, OnSuccessCall, OnErrorCall);
});
//});
var OnSuccessCall = function (result) {

        $('#txtAddNumbers').val(result);
}
var OnErrorCall = function (request, status, error) {

    alert(request.status + " " + request.statusText);
}