The simplest method would be to enclose "inc_header.asp"/"inc_header_short.asp" and "footer.asp"/"footer_short.asp" in a table with desired width.
For example: in "inc_header.asp", look for the following lines (appx 35-37):
Immediately following those lines, insert the following:
Then, to correspond with "inc_header.asp", you'd need to make a change to "inc_footer.asp". Look for the following lines (appx 71-74):
Change them to say:
If you have the events calendar mod installed, you will have to modify that table to match the width you choose. Change the value in red above to match the width you'd like. You can use pixel dimensions (i.e., width=""640"") or a percentage of the web page as shown.<