SSL coding to be done

I have got a 256bit security SSL installed on my website: [login to view URL] but for some reason when you go onto the secure part of my website a message appears on the browser with the https in red and crossed out saying, that although the page is encrypted with 256bit security, the page also includes other resources which are not secure. Please see the attached screenshot showing the message. This is a link to the secure part of my website: [login to view URL] I need all parts of my website to be secure so that this message doesn't show up. I only want the security however to appear when the customer visits the shopping cart of my e-commerce website. Please only bid if you know how to fix this problem. If you are interested, please stated interested2012 in your reply. My max budget for this project is $20. Thanks Anik