rem: if (this.NotifyClearAddresses != undefined) 
add: if ("NotifyClearAddresses" in this) 
context: function CheckNotify(){  if (this.NotifyClearAddresses != undefined)    NotifyClearAddresses();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/691ae28c9cfe0e4dce987155cc72cbc09a7eb90d/msgHdrViewOverlay.js/clean/mailnews/base/resources/content/msgHdrViewOverlay.js