'currentStyle' Example
<html> <head> <style> td {background-color:red; font-family:verdana; font-size:12pt; font-weight:bold; color:white; width:100% } </style> </head> <body> <table> <tr> <td width="1100" id="myCell">content</td> </tr> </table> <button onclick="alert(myCell.currentStyle.width);">Width of the table</button> </body> </html>