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@@ -3122,6 +3122,9 @@
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// Iframes
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else if( backgroundIframe ) {
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var iframe = document.createElement( 'iframe' );
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+ iframe.setAttribute( 'allowfullscreen', '' );
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+ iframe.setAttribute( 'mozallowfullscreen', '' );
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+ iframe.setAttribute( 'webkitallowfullscreen', '' );
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// Only load autoplaying content when the slide is shown to
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// avoid having it play in the background
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