Force IE8 Into IE7 Compatiblity Mode

Is there a way to force IE8 into IE7 compatibility mode using .NET or Javascript?

Solution 1:

If you add this to your meta tags:

<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />

IE8 will render the page like IE7.

Solution 2:

You can do it in the web.config

    <httpProtocol>
        <customHeaders>
            <add name="X-UA-Compatible" value="IE=7"/>
        </customHeaders>
    </httpProtocol>

I have better results with this over the above solutions. Not sure why this wasn't given as a solution. :)

Solution 3:

I might have found it now. http://blog.lroot.com/articles/the-ie7-compatibility-tag-force-ie8-to-use-the-ie7-rendering-mode/

The site says adding this meta tag:

<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7">

or adding this to .htaccess

Header set X-UA-Compatible: IE=EmulateIE7 

Solution 4:

There is an HTTP header you can set that will force IE8 to use IE7-compatibility mode.