what are MathJax opensource analogs for ActionScript\MXML developers? so to be cqapable to render strings like this
J_\alpha(x) = \sum_{m=0}^\infty \frac{(-1)^m}{m! \, \Gamma(m + \alpha + 1)}{\left({\frac{x}{2}}\right)}^{2 m + \alpha}
into stuff like this
