dropzone on a web page

It's good to see the World Out There starting to adopt drag-and-drop
in some situations where Acornuts have taken it for granted for 30
years.

For instance http://onlinemd5.com is a service that calculates the MD5
checksum for any file without having to upload it: you just drag the
file out of its directory to the dropzone on the web page. This works
a treat in Windows on my laptop.

Unfortunately, though, not in RiscOS Netsurf: if the file is a Jpeg
or text, Netsurf displays the picture or text rather than feeding the
file to the MD5 calculator.

Of course, it could be that the calculation is performed by Javascript
so Netsurf couldn't handle the job anyway.

But I'm curious about the technique involved in registering a file's
pathname by this "dropzone" method. Can Netsurf cope with this in
principle?

--
Jim Nagel www.archivemag.co.uk