IE8 HTTPS warning

Over the last few days I've been using Outlook Web access to read e-mail. A lot of the bulk mail messages I get have graphics in them. OWA uses https, be the graphic are using http. So, IE8 gives you a warning asking:

Do you want to veiw only the webpage content that was delivered
securely?

My instinct is to hit the Yes button to show the graphics. However, you need to select No.

However, you can disable this warning. The steps are located here: http://blog.httpwatch.com/2009/04/23/fixing-the-ie-8-warning-do-you-want-to-view-only-the-webpage-content-that-was-delivered-securely/