Dissapearing text in IE7

[mdoigny]

I have a page that display correctly in most browsers, but not in IE6 (still most of the visitors use this browser).

Part of the text dissapear when the page is scrolled. The text is still there and can be seen when selecting the part of the screen where the text should appear. It's clearly a bug in internet explorer, but can it be solved?

Page: http://www.verfaillie.com/bewaking1.htm

[Fang]

<div class="main" style="height:1%;">

Peek-a-boo bug

[mdoigny]

Works perfectly, thanks!