I have a "register" button on my website where users can create an account. However, every time someone clicks the "register now" button on my home page, that darn yellow pop up "Ineternet Explorer has blocked this website from displaying non-secure content".

My host and I have determined the issue is with the image of the "register now" button they are clicking. But we dont know what to do with this file so our users can click this button and go to a sign-up page without getting the non-secure message?