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<!DOCTYPE html> <html> <body> <h3>��ʾ��η��� Keygen ����</h3> <keygen id="myKeygen" name="security"> <p>�����ť������ keygen Ԫ�ء�</p> <button onclick="myFunction()">��һ��</button> <script> function myFunction() { var x = document.getElementById("myKeygen"); x.disabled = true; } </script> </body> </html>