I have successfully implemented an applet to launch a Family tree application using the following code in my webpage: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <body> <applet code="com/starkeffect/applications/gedcomviewer/GedcomViewerApplet.class" width=150 height=30 archive="gv.jar,resource.jar"> <PARAM NAME=GEDCOM VALUE="demo.ged"> <PARAM NAME=BUTTON VALUE="Open Viewer"> <!-- Alternate text to be displayed if Java cannot be run. --> NO JAVA! </applet> </body></html> However I understand that this code may not be suitable for all Browsers. I tried to use the Java Deployment Toolkit :but the applet wont load. Maybe I got the syntax all wrong. This is the code I used: <p>Click Button to View Family Tree </p><script src="http://www.java.com/js/deployJava.js"></script><script>var attributes = {code:'com/starkeffect/applications/gedcomviewer/GedcomViewerApplet.class',archive:'gv.jar',width:150, height:30} ;var parameters = {GEDCOM:cheefam2.ged} ;var parameters = {BUTTON: Launch Tree} ;var version = '1.6'<!--deployJava.setInstallerType('kernel');// include any required packages as shown belowdeployJava.setAdditionalPackages('javax.swing, javax.xml');-->deployJava.runApplet(attributes, parameters,version);</script> The .ged file , GV.jar and the html page are all in the same folder.so I did not use Codebase : etc etc Please let me know what I did wrong.Thanks