This is a two piece script. Place the first script between the and tags.
Where you see I have the word "CONTENT" that is the NAME of your IFRAME.
I have NAMED my IFRAME "CONTENT", you can NAME your IFRAME the same
or leave it as I have it.
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This next part of the script is for the dropdown menu, place this after the
line of code where ever you would like this dropdown menu to show up.
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This last code is the IFRAME code, notice the NAME I gave the IFRAME is the same
as it is in the first part of this script.