We can't do that because my.visokio.com is a largely unmonitored temporary upload for static IOK files whereas our demo Mobile server has manual validation checks done on all files hosted.
Also unfortunately the HTML page is uploaded by the app itself, so we can't push out new text to existing applications.
I'm afraid that webstart is deprecated in most browsers and should only continue to be used in controlled environments where the recipient has Java and has guidance for opening the JNLP files.