'To use applets on a web page, click on the region labeled "Missing plug-in" to go download the latest version of the Java applet plug-in from Oracle"'???

Region labelled simply means that it will be displayed in your proper language.

Instead of the showing the applet, the browser will display an empty zone with a button in the middle (Missing plug-in). When clicking on the button, a popup is shown allowing you to open the oracle website to download the new Java 7 JRE.

There is an article on howto revert back to the old "Apple provided Java 6 plugin" that should restore JRE 6 based applet / webstart functionality but it didn't really work for me.

Although this only affects the JRE (Plugin / Webstart) and not the JDK, as you are relying on Webstart and fear compatibility issues, I would be very careful in moving to JRE 7 and try to get the original situation back in place.

Hate when you ask for personal details wrote:

There is an article on howto revert back to the old "Apple provided Java 6 plugin" that should restore JRE 6 based applet / webstart functionality but it didn't really work for me.

I have solved my problem now. The article you link to is incomplete, you also have to edit /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist

That's not an appropriate way to fix the problem. Your version of Java SE 6 is unsafe for use on the web and needs to be updated.

All you should have to do is run Software Update to obtain Java for OS X 2013-001 or download it from here. That will give you the currently safe version Java SE 6 1.6.0_41-b02-445.

Hate when you ask for personal details wrote:

Running Software Update does not give me a newer version of Java. There is a lot of people on the web who are stuck at 434.

Did you try downloading the update at the link I gave you and installing from there? I know a lot of people were stuck until last Tuesday, but so far you are the only one I've run into that still has that problem.