Editing Complex Equations For Conversion Into HTML?

sakul asks: "I'm working for an online education company, and I'm looking for an easy way to allow teachers to type in equations and math symbols and have them converted into images for display on webpages. These teachers are used to using graphing calculators and they can understand having to write out things like (a^2)/3 but not that LaTex \frac{a^2}{3}. I've looked at that Java Equation editior that WebEq makes, but entering all those equations by hand is really hard, and it only generates MathML, which makes it basically impossible to go back and edit the equations once they've been typed in. I know that other people out there have delt with this problem, but I can't find a soultion anywhere." Perhaps some form of preprocessor can be written that can take an HTML file and expand the equations in one form "(a ^ 2)/3" and convert it on-the-fly into MathML at display time? There are plenty of solutions out there that one could use to pull this off.