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function resizeIframe() {
	if ( $('iframe') ) {
		var iframe = $('iframe');
		iframe.each(function(){
			var parent = $(this).parent();
			var ratio = $(this).attr('width') / $(this).attr('height');
			$(this).attr('width', parent.width());
			$(this).attr('height', parent.width()/ratio);
		});
	}
}
// Event on document load
$(document).ready(function(){
  resizeIframe();
});
// Event on resize window
$(window).resize(function(){ 
	resizeIframe(); 
});