detect java not installed and provide a link from Javascript
<p>I have this panorama viewer that makes use of java, </p>

<p>but when trying to acces from firefox and java not installed, it warns that some plugin is needed but it doesn't specify whitch one or where to download if from...</p>

<p>So, can i, from javascript, detect if user hasn't installed java and provide him with a download link?</p>
