Fix body language - How do you fix my hyper text markup language?

How do you fix my hyper text markup language?

How do i fix my table? i want to add a cell without text. here is my html, take a look at the <th> tag with width at 25% <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>Apply 4</title> </head> <body> <table align="center" border="8" cols="6" cellspacing ="15" width="100%" bgcolor="#FFCC99"> <tr> <th colspan="6">AFTER SCHOOL TUTORING Responsibility Chart</th> </tr> <tr> <th width="25%"></th> <th width="15%">Rick Coles</th> <th width="15%">Lori Feldman</th> <th width="15%">Musa Naroseh</th> <th width="15%">Laquisha Petersen</th> <th width="15%">Tyler Walters</th> </tr> <tr> <td>Algebra</td> <th>X</th> <th></th> <th></th> <th></th> <th></th> </tr> <tr> <td>Calculus</td> <th> </th> <th>X</th> <th>X</th> <th> </th> <th> </th> </tr> <tr> <td>Biology I</td> <th> </th> <th> </th> <th>X</th> <th> </th> <th></th> </tr> <tr> <td>Biology II</td> <th> </th> <th> </th> <th> </th> <th>X</th> <th> </th> </tr> <tr> <td>American History</td> <th> </th> <th> </th> <th> </th> <th> </th> </tr> <tr> <td>World History</td> <th>X</th> <th></th> <th> </th> <th> </th> <th>X</th> </tr> </table> </body> </html>

Public Comments

Just place a (non-breaking space) in the <th width="25%"></th>, like this: <th width="25%"> </th> It will then show the entire cell and border @ 25%
Insert space character " " inside <th> tags, like this: <th width="25%"> </th>. More information about special characters can found in http://www.w3.org/MarkUp/html3/specialchars.html.
The proper code for a space is & nbsp; (Note: remove the space between & and nbsp; -- some reason, the code will not display properly if I combine it in this text box. Putting this code within a cell will allow the cell to be displayed without text