Copy out Central area of Old Html page to Paste to Corresponding Position on New Html Skin

Briefly, here's the task: "Copy out Central area of Old Html page to Paste to Corresponding Position on New Html Skin". Here's the explanation in more detail: We have a new layout to replace old site layout. The change is mainly in the Top Header, the Right sidebar, and the left Sidebar, which constitutes the New Skin. The central area is the same. So, here's the task: We need the CENTRAL AREA below the Top Header, and in between the Right and Left sidebar, ie this "SANDWICHED PORTION" copied out from our 16 html pages and respectively pasted to the new skin, so this is a COPY-AND-PASTE job to transfer central area to the new html skin for 16 pages. Apart from this copy and paste, we expect some resizing of the page to fit properly into the new layout's dimensions. In summary, the task can be described in one-sentence as follows: "Copy out Central area of Old Html page to Paste to Corresponding Position on New Html Skin"