PHP - Secure pages in forms

This may be slightly off topic, but as I am in the progress of making this work with php pages, I figure someone can help me out. If have site with two php pages in two frames (like a contents page to the left of the screen in one frame and a main frame for their content). Now when I click in the non-secured left frame on say the products page, I use an <a href="servername.com/products.php">. But say for instance I wanted that page to be sent through the SSL server I'd do the following <a hre="https://servername.com/products.php">. This works fine (as I see the message come up about I am going to secure page. The problem is that the lock does not turn yellow on the browser. The people don't know they are on a secure page. I'm pretty sure it has somthing to do with the frames. Does anyone know how to make this work? Thanks a lot.