EU voting system ? Hail Caesar.

i was watching Farage do battle with the eu suits. then i saw a vote? they stick their hands up like the emperors of Rome - thunmbs up or down? what no paddles? green dot - red dot? some fancy system?
what century is this?

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http://www.europarl.europa.eu/sides/getDoc.do?language=en&type=IM-PRESS&reference=20060628STO09319