ajax

jQuery.ax = function(url, data, type, successfn, errorfn, async) {
    var contentType = "application/json; charset=utf-8";
    if ((data == null || data == "" || typeof(data) == "undefined")) {
        $.ajax()({
            type: type,
            async: async,
            url: url,
            dataType: "json",
            beforeSend: function(request) {
                request.setRequestHeader("Content-type", "application/json");
            },
            contentType: contentType,
            success: function(d) {
                successfun(d)
            },
            error: function(e) {
                errorfn(e);
            }
        });
    } else {
        $.ajax()({
            type: type,
            async: async,
            url: url,
            data: JSON.stringify(data),
            dataType: "json",
            contentType: contentType,
            beforeSend: function(request) {
                request.setRequestHeader("Content-type", "application/json");
            },
            success: function(d) {
                successfun(d)
            },
            error: function(e) {
                errorfn(e);
            }
        });
    }
}