add: UpdateAttachmentCol(true); 
context: function OnLoadThreadPane(){    UpgradeThreadPaneUI();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/f7cb6ff817adc467cd7c4bb0005357f8afa390f0/msgMail3PaneWindow.js/buggy/mailnews/base/resources/content/msgMail3PaneWindow.js