rem: ClearThreadPane(); 
add: ClearThreadPane(); GetUnreadCountElement().hidden = true; GetTotalCountElement().hidden = true; GetMessagePane().collapsed = true; document.getElementById("threadpane-splitter").collapsed = true; document.getElementById("key_toggleMessagePane").setAttribute("disabled", "true"); 
context: function HidingThreadPane(){    ClearThreadPane();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e29db857d189867d3ded0ecde46ba40049e5b40c/mailWindow.js/clean/mail/base/content/mailWindow.js