Bad display of Iframe portlet using ajax

[snon]

Hi,

i'm using an Iframe portlet to display an ajax generated content. I have a problem with the display on IE 6 :
When I use the scroll bar, the content is partially replicated.
Page display OK :
[URL=http://img66.imageshack.us/my.php?image=affichageokmq0.jpg][IMG]http://img66.imageshack.us/img66/6477/affichageokmq0.th.jpg[/IMG][/URL]

Page display KO when using scroll bar : [URL=http://img230.imageshack.us/my.php?image=affichagekovd7.jpg][IMG]http://img230.imageshack.us/img230/8884/affichagekovd7.th.jpg[/IMG][/URL]

Not reproduced on IE 7 or Firefox 2.0

Any ideas ?

[snon]

Hi,

little mistakes with the pictures :
Page display OK :
http://img66.imageshack.us/my.php?image=affichageokmq0.jpg
Page display KO :
http://img230.imageshack.us/my.php?image=affichagekovd7.jpg]

[snon]

Hi,

little mistakes with the pictures :
Page display OK :
http://img66.imageshack.us/my.php?image=affichageokmq0.jpg
Page display KO :
http://img230.imageshack.us/my.php?image=affichagekovd7.jpg