getExcelFile: function() {
            testJson = validation_data;
            testTypes = {
                "name": "String",
                "city": "String",
                "country": "String",
                "birthdate": "String",
                "amount": "Number"
            };

            emitXmlHeader = function() {
                return '<?xml version="1.0"?>n' +
                        '<ss:Workbook xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">n' +
                        '<ss:Worksheet ss:Name="Sheet1">n' +
                        '<ss:Table>nn';
            };

            emitXmlFooter = function() {
                return 'n</ss:Table>n' +
                        '</ss:Worksheet>n' +
                        '</ss:Workbook>n';
            };

            jsonToSsXml = function(jsonObject) {
                var row;
                var col;
                var xml;
                var data = typeof jsonObject != "object"
                        ? JSON.parse(jsonObject)
                        : jsonObject;

                xml = emitXmlHeader();

                for (row = 0; row < data.length; row++) {
                    xml += '<ss:Row>n';

                    for (col in data[row]) {
                        xml += '  <ss:Cell>n';
                        xml += '    <ss:Data ss:Type="' + testTypes[col] + '">';
                        xml += data[row][col] + '</ss:Data>n';
                        xml += '  </ss:Cell>n';
                    }

                    xml += '</ss:Row>n';
                }

                xml += emitXmlFooter();
                return xml;
            };
            download = function(content, filename, contentType) {
                if (!contentType)
                    contentType = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
                var a = document.getElementById('test');
                var blob = new Blob([content], {
                    'type': contentType
                });
                a.href = window.URL.createObjectURL(blob);
                a.download = filename;
            };

            download(jsonToSsXml(testJson), 'validation_data.xlsx', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        }