Test http://www.w3.org/2001/DOM-Test-Suite/level3/core/nodereplacechild24

<test name='nodereplacechild24' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-3 dom3.xsd'>
     <metadata>
          <title>nodereplacechild24</title>
          <creator>IBM</creator>
          <description> Using replaceChild on an EntityReference node attempt to replace an Element node with an EntityReference node verify if a NO_MODIFICATION_ALLOWED_ERR gets thrown. </description>
          <contributor>Neil Delima</contributor>
          <date qualifier='created'>2002-06-10</date>
          <subject resource='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core#ID-785887307'/>
</metadata>
     <implementationAttribute name='expandEntityReferences' value='false'/>
     <var name='doc' type='Document'/>
     <var name='childList' type='NodeList'/>
     <var name='entRef' type='EntityReference'/>
     <var name='elem' type='Element'/>
     <var name='replaced' type='Element'/>
     <var name='nodeName' type='DOMString'/>
     <load var='doc' href='hc_staff' willBeModified='true'/>
     <getElementsByTagName var='childList' obj='doc' tagname='"acronym"' interface='Document'/>
     <item var='elem' obj='childList' index='1' interface='NodeList'/>
     <firstChild var='entRef' obj='elem' interface='Node'/>
     <assertDOMException id='throw_NO_MODIFICATION_ALLOWED_ERR'>
          <NO_MODIFICATION_ALLOWED_ERR>
               <replaceChild var='replaced' obj='entRef' oldChild='elem' newChild='entRef'/>
          </NO_MODIFICATION_ALLOWED_ERR>
     </assertDOMException>
</test>

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