734 		dom.background = createSingletonNode( dom.wrapper, 'div', 'backgrounds', null );
1070 		dom.background.innerHTML = '';
1071 		dom.background.classList.add( 'no-transition' );
1076 			var backgroundStack = createBackground( slideh, dom.background );
1092 			dom.background.style.backgroundImage = 'url("' + config.parallaxBackgroundImage + '")';
1093 			dom.background.style.backgroundSize = config.parallaxBackgroundSize;
1094 			dom.background.style.backgroundRepeat = config.parallaxBackgroundRepeat;
1095 			dom.background.style.backgroundPosition = config.parallaxBackgroundPosition;
1108 			dom.background.style.backgroundImage = '';
1177 			background: slide.getAttribute( 'data-background' ),  property in AnonymousFunctione17f777e0200.syncBackground.data
1189 		if( data.background ) {
1191 …f( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)([?#\s]|$)/gi.tes…
1192 				slide.setAttribute( 'data-background-image', data.background );
1195 				element.style.background = data.background;
1202 …if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || dat…
1203 			element.setAttribute( 'data-background-hash', data.background +
2486 			dom.slides.appendChild( dom.background );
2547 		toArray( dom.background.childNodes ).forEach( function( hbackground, h ) {
2600 			dom.wrapper.appendChild( dom.background );
2610 …toArray( dom.background.querySelectorAll( '.slide-background' ) ).forEach( function( background ) {  argument
2611 				transformElement( background, '' );
3609 		toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) {
3684 				dom.background.classList.add( 'no-transition' );
3706 			dom.background.classList.remove( 'no-transition' );
3722 			var backgroundSize = dom.background.style.backgroundSize.split( ' ' ),
3733 			var slideWidth = dom.background.offsetWidth,
3747 			var slideHeight = dom.background.offsetHeight,
3761 			dom.background.style.backgroundPosition = horizontalOffset + 'px ' + -verticalOffset + 'px';
3830 		var background = slide.slideBackgroundElement;
3831 		if( background ) {
3832 			background.style.display = 'block';
3838 			if( background.hasAttribute( 'data-loaded' ) === false ) {
3839 				background.setAttribute( 'data-loaded', 'true' );
3902 				if( shouldPreload( background ) && !/autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) {
3926 		var background = getSlideBackground( slide );
3927 		if( background ) {
3928 			background.style.display = 'none';
3931 			toArray( background.querySelectorAll( 'iframe[src]' ) ).forEach( function( element ) {