Pan- you can navigate the mandelbrot by simply clicking where you are interested!
Zoom- use the scroll wheel to get a closer look.
Iterations and Escape Radius- both of these parameters can be altered (mouseover for spinner)
Hint- if the screen flashes all black when computing, try increasing the number of iterations!Also...go fullscreen for the best experience(F11 on most browsers).
Note this is a work in progress, thus there may be a few bugs. New versions are constantly being pushed and tested. This is optmised for Google Chrome and will work in Internet Explorer.