I have the following files (modified for showing the bug):

Main.fx
=======
import javafx.lang.FX;
...
if (FX.getArgument("lang") == "???"){
(do something)
}
=======


main.js
=======
var my_lang = '???';
var html = '???';
...
(function () {
var o = {};
o.archive = '???.jar';
o.draggable = true;
o.width = '728px';
o.height = '90px';
o.code = '???.Main';
o.name = '???';
o.lang = '' + my_lang;
html += '' + javafxString(o);
})();
...
(update/display new html)
...
=======

On a Windows XP machine, the above works well for IE 8, Firefox 3, but not the case for Google Chrome 3.
I think FX.getArgument("lang") in JavaFX run on Google Chrome could not get the correct value.

Meanwhile, Opera 10 and Safari 4 on Windows XP could not even run JavaFX!