JAVA applet like FRACTAL EXTREME

[hgjf2]

On the site math.hws.edu/xJava/MB/‎  exist a applet like FRACTAL EXTREME as JAVA appet whick have a high precision like FRACTAL EXTREME and ULTRAFRACTAL what you can deepzooming MANDELBROT fractal set over 1E+250 zooming.
But if you zooming over 1E+15 , fractal rendering slow, althrough you don't try to zoom too deeper that because this fractal render more slow how deepzoom deeper and if reach to 1E+1000 this applet can stop responding.
The zooming make with your mouse click, the applet have menues: "color menue", "File"(saving, enable/disable high precision etc), "help".
I believe that applet is a really FRACTAL EXTREME java emulator.