I'm doing some web-based college-level course design in fluid mechanics. I'd like an efficient way to incorporate LaTeX equations - preferably on the fly like PF does here. I can create the equations elsewhere (e.g., using TexPoint, PowerPoint and Miktex) and then insert them into my pages but it seems a laborious process. Does anyone know how PF does it? Is it open-source, proprietory, available...? Anyone have any other ideas on this?