he context node is read only node and the 
   content is being inserted in its child list.
   <br> INVALID_STATE_ERR: Raised if the <code>LSParser.busy</code> 
   attribute is <code>true</code>.<DD><A HREF="../../../../org/w3c/dom/ls/LSException.html">LSException</A> - PARSE_ERR: Raised if the <code>LSParser</code> was unable to load 
   the XML fragment. DOM applications should attach a 
   <code>DOMErrorHandler</code> using the parameter "<a href='http://www.w3.org/TR/DOM-Level-3-Core/core.html#parameter-