hide columns by sliding down to no width

[Michael Scovetta]

....
<tr>
<td id="r1c1">r1c1</td>
<td id="r1c2">r1c2</td></tr>
<tr>
<td id="r2c1">r2c1</td>
<td id="r2c2">r2c2</td></tr>
<tr>
<td id="r3c1">r3c1</td>
<td id="r3c2">r3c2</td></tr>
....

How can I slide column x down to no width (via setInterval,
setTimeout, or maybe even a MS filter)? I can't get this to work-- any
changes to width, style.width, style.poswidth, etc are hidden until
all changes are complete, so it looks like it just *pops* down to the
minimum size.

Any ideas on this?

Thanks!

Mike Scovetta