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'&' : '?') + queryString.slice(1);\n  }\n\n  return url;\n} // https://gist.github.com/Xeoncross/7663273\n\n\nfunction ajax(url, options, callback, data, cache) {\n  if (data && _typeof(data) === 'object') {\n    if (!cache) {\n      data['_t'] = new Date();\n    } // URL encoded form data must be in querystring format\n\n\n    data = addQueryString('', data).slice(1);\n  }\n\n  if (options.queryStringParams) {\n    url = addQueryString(url, options.queryStringParams);\n  }\n\n  try {\n    var x;\n\n    if (XMLHttpRequest) {\n      x = new XMLHttpRequest();\n    } else {\n      x = new ActiveXObject('MSXML2.XMLHTTP.3.0');\n    }\n\n    x.open(data ? 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