How do I switch to a previous Java plug-in?

How do I switch to a previous Java plug-in? I want to use 1.3 not 1.4, but I'm not sure how to change that without uninstalling 1.4.
Thanks in advance.

Once you installed 1.4 on top of 1.3, you updated the default plugin registry key to point to 1.4 (assuming you're running on Windows). So any web page that specifies this default key in it's HTML will automatically run the 1.4 plugin.
If these are your applets, you can specify the specific key for 1.3, and then 1.3 will be loaded even though the default is 1.4. This link gives some more information: http://java.sun.com/products/plugin/versions.html
If you just want to run all applets with 1.3, the easiest thing to do is to re-install 1.3. The default key points to whatever plugin was last installed. You could modify the registry keys yourself, but there are about 15 or more keys involved. There's no easy way to do it from the 1.4 control panel, at least none that I can find.

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