function enumerateInterfaces(obj){  var interfaces = new Array();  for (i in Components.interfaces)  {    try    {      obj.QueryInterface(Components.interfaces[i]);      interfaces.push(i);    }    catch(e) {}  }  return interfaces;}function enumerateProperties(obj, excludeComplexTypes){  var properties = "";  for (p in obj)  {    try    {      if (excludeComplexTypes          && (typeof obj[p] == 'object' || typeof obj[p] == 'function')) next;      properties += p + " = " + obj[p] + "\n";    }    catch(e) {      properties += p + " = " + e + "\n";    }  }  return properties;}// minimal implementation of nsIOutputStream for use by dumpRDF, adapted from// http://groups.google.com/groups?selm=20011203111618.C1302%40erde.jan.netgaroo.devar DumpOutputStream = {  write: function(buf, count) { dump(buf); return count; }};function dumpRDF( aDS ) {  var serializer = Components.classes["@mozilla.org/rdf/xml-serializer;1"]    .createInstance( Components.interfaces.nsIRDFXMLSerializer );    serializer.init( aDS );    serializer.QueryInterface( Components.interfaces.nsIRDFXMLSource )    .Serialize( DumpOutputStream );}