check window.ontouchstart != null (required for qtwebkit)
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@ -439,7 +439,7 @@ var Reveal = (function(){
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}
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if ( config.controls && dom.controls ) {
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var actionEvent = 'ontouchstart' in window ? 'touchstart' : 'click';
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var actionEvent = 'ontouchstart' in window && window.ontouchstart != null ? 'touchstart' : 'click';
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dom.controlsLeft.forEach( function( el ) { el.removeEventListener( actionEvent, onNavigateLeftClicked, false ); } );
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dom.controlsRight.forEach( function( el ) { el.removeEventListener( actionEvent, onNavigateRightClicked, false ); } );
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dom.controlsUp.forEach( function( el ) { el.removeEventListener( actionEvent, onNavigateUpClicked, false ); } );
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