var httpData = $.httpData || function( xhr, type, s ) { // lifted from jq1.4.4
    var ct = xhr.getResponseHeader("content-type") || "",
      xml = type === "xml" || !type && ct.indexOf("xml") >= 0,
      data = xml ? xhr.responseXML : xhr.responseText;

    if ( xml && data.documentElement.nodeName === "parsererror" ) {
      $.error( "parsererror" );
    }
    if ( s && s.dataFilter ) {
      data = s.dataFilter( data, type );
    }
    if ( typeof data === "string" ) {
      if ( type === "json" || !type && ct.indexOf("json") >= 0 ) {
        data = $.parseJSON( data );
      } else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) {
        $.globalEval( data );
      }
    }
    return data;
  };