<?xml version="1.0" encoding="UTF-8"?>
<xs:schema targetNamespace="http://xbrl.sec.gov/rr-pre/2010-02-28" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:rr-pre="http://xbrl.sec.gov/rr-pre/2010-02-28" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="rr-pre-2010-02-28.xml"
        xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"
      />
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/rr/2010-02-28" schemaLocation="rr-2010-02-28.xsd"/>
  <xs:import namespace="http://xbrl.us/dei/2009-01-31" schemaLocation="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd"/>
</xs:schema>
