It appears that your browser does not have the java plugin installed, or it is otherwise disabled.
You can download the latest plugin here or here .

If the test applet to the left shows green, then you have an active java plug-in that is a supported version. If the screen is yellow, you may wish to upgrade. If the screen is red, then you will need to upgrade in order to run the merger applet. You can find instructions for installing the java plug-in here

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