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AjaxJsonPostCall = function (fullUrl, dataObj, callbackFunction) {
    $.ajax({
        type: 'post',
        url: fullUrl,
        data: JSON.stringify(dataObj),
        dataType: 'json',
        cache: false,
        success: function (data) { callbackFunction(GetJson(data)); },
        error: function (XMLHttpRequest, textStatus, errorThrown) {
            console.log("error :" + XMLHttpRequest.responseText);
            alert('There was an error in performing this operation.');
        }
    });
};

GetJson = function (data) {
    if (data == '' || data == 'undefined') return null;
    return (JSON && JSON.parse(data) || $.parseJSON(data));
};