rem: if (gCurrentMessageUri) return 1; else return 0; 
add: return (gCurrentMessageUri) ? 1 : 0; 
context: function GetNumSelectedMessages(){	if (gCurrentMessageUri)		return 1;	else		return 0;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/fe07aedeea0c9be3af990dba4844697f2a13c40e/messageWindow.js/clean/mailnews/base/resources/content/messageWindow.js