rem: function GoPreviousMessage(previousFunction, startFromEnd) 
add: function GoPreviousMessage(type, startFromEnd) 
context: function GoPreviousMessage(previousFunction, startFromEnd){	var tree = GetThreadTree();		var selArray = tree.selectedItems;	if ( selArray && (selArray.length == 1) )	{		var currentMessage = selArray[0];		var previousMessage = GetPreviousMessage(currentMessage, previousFunction, startFromEnd);		//Only change selection if there's a valid previous message.		if(previousMessage && (previousMessage != currentMessage))			ChangeSelection(tree, previousMessage);	}}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/d04174bf7b6b57f1c23923c2a9cbcf1223681cb5/msgViewNavigation.js/buggy/mailnews/base/resources/content/msgViewNavigation.js