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				@@ -44,6 +44,9 @@ var Reveal = (function(){ 
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				 			// Enable keyboard shortcuts for navigation 
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				 			keyboard: true, 
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				+			// Optional function that blocks keyboard events when retuning false 
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				+			keyboardCondition: null, 
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				+ 
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				 			// Enable the slide overview mode 
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				 			overview: true, 
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				@@ -2836,6 +2839,12 @@ var Reveal = (function(){ 
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				 	 */ 
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				 	function onDocumentKeyDown( event ) { 
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				+		// If there's a condition specified and it returns false, 
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				+		// ignore this event 
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				+		if( typeof config.keyboardCondition === 'function' && config.keyboardCondition() === false ) { 
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				+			return true; 
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				+		} 
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				+ 
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				 		// Remember if auto-sliding was paused so we can toggle it 
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				 		var autoSlideWasPaused = autoSlidePaused; 
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