adding a frame within the main template

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My main site is:
http://www.ontheroad.eu.com.index.htm

Coppermine is located at:
http://www.ontheroad.eu.com/both/photos/Coppermine.htm

As you can see the banner on the top of each is different.

My site uses frames and I have used a different frame for the coppermine page as it is smaller and leaves more dedsktop space for the gallery.

Ideally I would like to be able to incorprate the larger frame from the main site into the top of the coppermine template that I am using, negating the need for an additional fram and thereby leaving more desktop space. Is this at all possible as I tried to include it as a header, however as I have discovered entering a link to an html header within the header section of the config panel as shown does not work. ie:  http://www.whatever.com/topbanner.htm

Any advice would be much appreciated.