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document.writeln("function click() {");
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document.writeln("alert('不能复制咯') }");
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document.writeln("if (event.button==2) {alert('版权所有  请勿复制！') }}");
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document.writeln("function CtrlKeyDown(){");
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document.writeln("if (event.ctrlKey) {alert('祝大家玩的开心！') }}");
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