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<!DOCTYPE html> <html> <body> <button onclick="openWin()">Open w3schools.com in a new window</button> <button onclick="closeWin()">Close the new window (w3schools.com)</button> <script> var myWindow; function openWin() { myWindow = window.open("http://www.w3ii.com", "_blank", "width=500, height=500"); } function closeWin() { myWindow.close(); } </script> </body> </html>