- <html>
- <script>
- var openedWindow = null;
- function openNewWindowOrClose() {
- if (openedWindow == null) {
- openedWindow = window.open('about:blank', '');
- } else {
- openedWindow.close();
- openedWindow = null;
- }
- }
- </script>
- <body onclick="openNewWindowOrClose();">
- <p>some content</p>
- </body>
- </html>
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