Checking Browsers plugin

[lastuser]

Is it possible to check (PHP) has Opera users java-plugin installed??

[IceD]

Yes, but it's somehow tricky. You need:
1. Generate page with java applet.
2. This java applet should submit data back to the script, otherwise make redirection by timeout...
3. Check what's submited

[daveyboy]

Is it not also possible to check plugins with JavaScript? You could build a url with JS and call window.href = myscript.php?flash=yes&java=no . Maybe. Not such a JS wiz myself.