JavaScript DHTML/Javascript Objects/currentStyle
"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>