This issue is resolved. In the applet_http_explorer.js file must have java_codebase changed in the Netscape 3 and 4.x section for Firefox to work for my site. I had only changed the codebase value under the IE, Firefox, Safari, Opera, Mozilla, section.

Would it make a difference if I said I already purchased your product?

works on your demo site. Can I email you a link to my site so you can have a look at my implementation?

I am using explorer and it is working as expected in IE. However accessing the same page in firefox gives the following error: load: class jfileupload.upload.client.MApplet.class not found. java.lang.ClassNotFoundException: jfileupload.upload.client.MApplet.class at sun.plugin2.applet.Applet2ClassLo...