In order to address certain issues with older versions of Internet Explorer, I have included additional stylesheets as follows:
<!--[if IE 8]>
<link rel="stylesheet" href="/CallCentre/ServiceCloud/Content/IE8.css">
<![endif]-->
<!--[if IE 7]>
<link rel="stylesheet" href="/CallCentre/ServiceCloud/Content/IE7.css">
<![endif]-->
A problem has emerged where a rule specific to IE7 within the IE7.css stylesheet is affecting Internet Explorer 9.
Why is IE9 utilizing my conditional IE7 stylesheet?
Update:
Oded and hsalama are making progress in identifying the issue.
If I include:
<meta http-equiv="X-UA-Compatible" content="IE=edge">
Or
<meta http-equiv="X-UA-Compatible" content="IE=9">
It triggers "Browser Mode: IE9 Compat View".
Removing this tag causes it to operate in IE7 mode.