rem: var now_hidden = !IsThreadAndMessagePaneSplitterCollapsed(); if (gDBView) { gDBView.suppressMsgDisplay = now_hidden; } NotifyChangedMessagePaneVisibility(now_hidden); 
add: ChangeMessagePaneVisibility(!IsMessagePaneCollapsed()); 
context: function OnClickThreadAndMessagePaneSplitterGrippy(){  // the collapsed state is the state when we clicked on the grippy  // not when afterwards, so we need to reverse this value  var now_hidden = !IsThreadAndMessagePaneSplitterCollapsed();  if (gDBView) {    gDBView.suppressMsgDisplay = now_hidden;  }  NotifyChangedMessagePaneVisibility(now_hidden);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1bf116705295b0116603516afe1ebdfff5576170/commandglue.js/buggy/mailnews/base/resources/content/commandglue.js