rem: else { if (resultsTree) { ClearResultsTreeSelection(); resultsTree.setAttribute("ref", null); } } 
context: function DirPaneSelectionChange(){  if (dirTree && dirTree.selectedItems && (dirTree.selectedItems.length == 1))    ChangeDirectoryByDOMNode(dirTree.selectedItems[0]);  else {    if (resultsTree) {      ClearResultsTreeSelection();      resultsTree.setAttribute("ref", null);    }  }}
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