add:   GetThreadTree().boxObject.height; 
context: function ShowingThreadPane(){  var threadPaneSplitter = document.getElementById("threadpane-splitter");  threadPaneSplitter.collapsed = false;  GetMessagePane().collapsed = (threadPaneSplitter.getAttribute("state") == "collapsed");  document.getElementById("key_toggleMessagePane").removeAttribute("disabled");}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/4476b986689b7cf95fc482b1c5d3ef62f00fb5bc/mailWindow.js/clean/mail/base/content/mailWindow.js