Animating HTML frame size change

[mrmiffo]

Hi, I want to animate the change of a frames' size. Something like;

for (i=0, i<250, i++)
{
var aValue = i + "px,*"
parent.document.getElementById(whichFrameSet).cols = aValue;
}

What I do not understand is why the frame is not updated each and every time the size is set... not until i = 250 it will display the result.
Is it because the frameset is not updated visually when in loop? Or is it just counting to 250 too fast so I need to put a timer here as well?
If I put an alert in the loop, the frame will change each time I click "ok".
Is there any way in js to update the framset visually in a loop?

Thanks in advance!

[debasisdas]

Question moved to more appropriate HTML Forum.

[acoder]

This belongs to the JavaScript forum, but anyway...

You need to use setInterval for the animation effect. It's too fast otherwise.