rem: function getMIMEInfoForType(aMIMEType) 
add: function getMIMEInfoForType(aMIMEType, aExtension) 
context: function getMIMEInfoForType(aMIMEType){  try {      return getMIMEService().GetFromMIMEType(aMIMEType);  }  catch (e) {  }  return null;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/7681fd5a1b7e2f618ffdddcfb82d309196151030/contentAreaUtils.js/buggy/toolkit/content/contentAreaUtils.js