add: return; 
context: function ChangeDirectoryByDOMNode(dirNode){  var uri = dirNode.getAttribute("id");  if (resultsTree) {    if (uri != resultsTree.getAttribute("ref")) {      ClearResultsTreeSelection();      resultsTree.setAttribute("ref", uri);      WaitUntilDocumentIsLoaded();      SortToPreviousSettings();      SelectFirstCard();      UpdateStatusCardCounts(uri);    }  }}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/d08d4d3f9753b01573c0820f3dc3010c62295d11/abCommon.js/clean/mailnews/addrbook/resources/content/abCommon.js