tweak implementation of #1376
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										14
									
								
								js/reveal.js
									
									
									
									
									
								
							@@ -2728,8 +2728,20 @@
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			// Start video playback
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			var currentVideo = currentBackground.querySelector( 'video' );
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			if( currentVideo ) {
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				if( currentVideo.currentTime > 0 ) currentVideo.currentTime = 0;
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				var startVideo = function() {
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					currentVideo.currentTime = 0;
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					currentVideo.play();
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					currentVideo.removeEventListener( 'loadeddata', startVideo );
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				};
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				if( currentVideo.readyState > 1 ) {
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					startVideo();
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				}
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				else {
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					currentVideo.addEventListener( 'loadeddata', startVideo );
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				}
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			}
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			var backgroundImageURL = currentBackground.style.backgroundImage || '';
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