On the SSL templates, replace the [Top_Navigation] with the [Top_Navigation_SSL] and inside that _SSL class only use banners that have images located on the SSL so the images URL should start with https://. You can copy everything from the [Top_Navigation] to the [Top_Navigation_SSL] except the banner campaign you need to create one for the SSL area. Also any images on the SSL pages must be located on the SSL area.
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