When signature [jar sign] is accepted, the applet will become a standalone application
if the new window is clicked in the menu.
The browser will not communicate with this standalone java application window.
So the CompareNative() will not read the molecule.
It could be used to draw [question] chemicals and save them in Native of MDLmol format.
Or use the "export to javascript" to generate a Native/MDLMol javascript string.
[see "jm.evers module" on chemistry].