Change the cellPadding and cellSpacing of a table
<html> <head> <script type="text/javascript"> function padding(){ document.getElementById('myTable').cellPadding="25" } function spacing(){ document.getElementById('myTable').cellSpacing="25" } </script> </head> <body> <table id="myTable" border="1"> <tr> <td>a</td> <td>b</td> </tr> <tr> <td>c</td> <td>d</td> </tr> </table> <form> <input type="button" onclick="padding()" value="Change Cellpadding"> <input type="button" onclick="spacing()" value="Change Cellspacing"> </form> </body> </html>