UI- TABS

Hey all,
I am sure that this is a simple fix, but I cant get my head around
it. I am trying to overlay a class, on the content of the tabs, while
it is loading. I have the spinner class working for the tab itself,
but I also want the entire tab section(not screen) to go dark and have
a spinner in the middle. I cant get this to work. Any ideas or
suggestions.
Thanks in advanced,
Marc
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