I'm trying to figure out the best way to handle this, I'm hoping for advice. I have a sidebar that is the same in about 50 pages of html content. I don't want to have to modify 50 files when this sidebar changes, I'd like to somehow insert a link in those html files telling them where to find the updated sidebar. I cannot for the life of me figure out how to look that up. Is it a CSS function? PHP?If someone could point me in the right direction, that would be great. Thanks!