rem: if (this.NotifyClearAddresses != undefined) 
add: if ("NotifyClearAddresses" in this) 
context: function CheckNotify(){  if (this.NotifyClearAddresses != undefined)    NotifyClearAddresses();}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/5e5d33d0e88f78cb79a7d330c4d3001f6c5f8354/msgHdrViewOverlay.js/buggy/mailnews/base/resources/content/msgHdrViewOverlay.js