[santaclaus]

If one can solve a tridiagonal linear system in JS that is totes doable in a psuedo physical way: http://www.cse.ohio-state.edu/~whmin/Wang-2007-SGS/Wang-2007...

The Thomas algorithm (http://en.wikipedia.org/wiki/Tridiagonal_matrix_algorithm) and that technique could probs make your dream come true.