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    Detect Opening Folder

    Some actions require execution every time you open a folder (for example, registering a custom column handler. To do this you need to capture the select event of the folder [[XUL:tree|tree]] whose id is (conveniently) folderTree like so:

    window.document.getElementById('folderTree').addEventListener("select", testColumns, false);

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    Contributors to this page: wbamberg, jllogan
    Last updated by: wbamberg,
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