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Edit the text above, and click on the button to see the result.

<html> <head> <script type="text/javascript"> function changeBorder() { document.getElementById('myTable').border="10" } </script> </head> <body> <table border="1" id="myTable"> <tr> <td>100</td> <td>200</td> </tr> <tr> <td>300</td> <td>400</td> </tr> </table> <form> <input type="button" onclick="changeBorder()" value="Change Border"> </form> </body> </html>