YOU SAID:
<script> alert( 'Hello, world!' ); </script>
INTO JAPANESE
<script> alert( 'Hello, world!' ); </script>
BACK INTO ENGLISH
<script> alert( 'Hello, world!' ); </script>
INTO JAPANESE
<script> alert( 'Hello, world!' ); </script>
BACK INTO ENGLISH
<script> alert( 'Hello, world!' ); </script>
Come on, you can do better than that.