HTML pages can be loaded with the Object tag. See
http://www.wickham43.supanet.com/tut...scrollbar.html
However, IE6 insists on putting a border around it which it seems impossible to get rid of. Also any links inside an object when clicked will open inside the object which probably won't be big enough, although this doesn't apply in your case.
The alternatives are not CSS (not directly, anyway).
Javascript
or server side includes SSI such as PHP where a code in the HTML page results in the host server inserting code from another file before downloading (it would normally be just the code relevant to the image or whatever, not a whole HTML file. In other words you just cut a slice of code out of your current HTML and put it in a separate file and substitute PHP code to identify the place and other file). See PHP board on this website.
Code downloaded to my PC will be deleted in due course.
WIN7; IE9, Firefox, Opera, Chrome and Safari for Windows; screen resolution usually 1366*768.
Also IE6 on W98 with 800*600 and IE8 on Vista 1440*900.