rem: var threadPaneSplitter = document.getElementById("threadpane-splitter"); threadPaneSplitter.collapsed = false; GetMessagePane().collapsed = (threadPaneSplitter.getAttribute("state") == "collapsed"); 
add: var threadPaneSplitter = document.getElementById("threadpane-splitter"); threadPaneSplitter.collapsed = false; GetMessagePane().collapsed = (threadPaneSplitter.getAttribute("state") == "collapsed"); 
context: function ShowingThreadPane(){    var threadPaneSplitter = document.getElementById("threadpane-splitter");    threadPaneSplitter.collapsed = false;    GetMessagePane().collapsed =        (threadPaneSplitter.getAttribute("state") == "collapsed");}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/ced2e0fdd41a8ca3d991a8a2e0d6e64a507d5333/mailWindow.js/buggy/mail/base/content/mailWindow.js