There are "Internet Explorer 8", "Internet Explorer 8 Compatibility Mode", and IE7 mode in IE8.
However, the default setting in IE make all intranet website use "IE8 Compatibility Mode" even I have setted doctype, the meta tag, http header as suggested to force it into IE8 mode.
I have
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"
and
<meta http-equiv="X-UA-Compatible" content="IE=8"
But it still goes into "IE8 Compatibility Mode", without any changes in IE setting.
How to force it into pure "IE8" mode, without change any browser's setting?
PS. I am not talking "document mode" here.