Hello, im beginning to design a site which hopefully will one day be large with many sub-pages. i want to keep it as easy to change as possible and have therefore been using external style sheets and script files. how though would it be possible to externally link my navigation side bar, footer and header, as to be able to change it for the entire site quickly and easily? somehow to externally link a div? i have been thinking about using a javascipt function and document.write, but is it safe to assume that all visitors will have js enabled? or how is this done for large sites?
thanks for any help.