I am editing a website in Dreamweaver. The files are .asp files, but some codes are hidden in Dreamweaver, so I can not see them in code view or design view, however they are shown in browser when I type in the domain name. For instance, the dynamic head banner and some graphics are shown in the browser, however, they are not visible in Dreamweaver or when printed. Why?? And how can I view them in Dreamweaver? Any help would be appreciated!

Any chance you're going to show us the code that you do have available to you? Probably what you are dealing with is a SSI (server side include), that is bringing code onto the page from some other document, which is the best way of sharing data across many pages.