There is an embedded frameset bug in Internet Explorer 8:
Let's look at some simple example code (export to new html file and try it in different browsers):
<frameset rows="28,*,443">
<frame>
<frame>
<frameset id="InnerFrameset" rows="*,26">
<frame>
<frame>
</frameset>
</frameset>
In Internet Explorer 8 it is not possible to resize the lowermost frame, while this is no problem in other browsers including
Firefox 2, Firefox 3.0, Firefox 3.5, Opera Beta 10, Google Chrome 2.0, Internet Explorer 7 and even Internet Explorer 6 (!).
While it works perfectly in Internet Explorer 7, even the IE7-compatibility mode of IE8 doesn't do it right!
In
http://social.msdn.microsoft.com/Forums/en-US/iewebdevelopment/thread/de7b4d0c-843b-4d99-9343-6616b68844e9#de7b4d0c-843b-4d99-9343-6616b68844e9 there is a workaround solution for simple pages. But in a complex web application it is not possible to change the complete frameset logic for a simple bug of one browser. Can PLEASE someone of Microsoft make a statement about this issue and if/when it will be fixed?