There are a number of navigational tools, such as drop-down menus, site maps, search boxes, image maps, frames, and navigation bars that can be used when creating the navigational structure of the site. In addition, you should consider breaking long web-pages up into multiple pages and using a linked table of contents to enable the user to easily access any of the documents. Compatibility with the various devices that might be used to access the site, as well as with assistive hardware, should be considered.