Having trouble limiting applet to specific JRE family

Question

I've just joined a new project at work and have been asked to modify an applet so it will be forced to run using JRE 1.5, since the work has not yet been able to be done to certify it with JRE 1.6. I'm having trouble getting this to behave as I'd expect, based on info I've been given and have found on the web about how to do this.
The page containing the applet uses jsp. The applet is declared using a <jsp:plugin> tag which contains attributes:
jreversion="1.5"
iepluginurl="http://java.sun.com/products/plugin/1.3/jinstall-131-win32.cab"
Based on other information I found, I've also added a <jsp:param> tag within which contains:
name="java_version" value="1.5*"
The generated HTML from this contains an <OBJECT> tag with an attribute:
classid="clsid:CAFEEFAC-0015-0000-0011-ABCDEFFEDCBA"
and inside the <OBJECT> a number of <param> tags, including:
name="type" value="application/x-java-applet;version=1.5"
name="java_version" value="1.5*"
With all this in place, if I have JRE1.6 installed on my system, the applet still appears to be loaded in 1.6 (According to the Sun Java Console for the applet browser window), and it ends up failing to run in 1.6. If I remove 1.6 from the system, leaving 1.5 on my system, things work correctly.
I can't figure out what I'm doing wrong (or failing to do right) that is causing this to not end up being within a 1.5 JRE even though the browser is using the more recent 1.6 in general.
Any help would be greatly appreciated. Thanks!

Answer 1

Then shouldn't the <jsp:plugin> processing (of the jreversion="1.5") have generated a clsid value of clsid:CAFEEFAC-0015-0000-FFFF-ABCDEFFEDCBA instead of clsid:CAFEEFAC-0015-0000-0011-ABCDEFFEDCBA as it did?