Make a container div for the central part of your page with a width and height and overflow: scroll.
<div style="width: 700px; height: 500px; overflow: scroll;">............</div>
If you only want a vertical scrollbar then the code is overflow-y: scroll; overflow-x: hidden;
or overflow-y: scroll; overflow-x: auto which will make a horizontal scrollbar only if required.
http://www.wickham43.supanet.com/tut...llingdivs.html
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.