source: ['src', 'type'],
embed: ['type', 'class', 'pluginspage', 'src', 'width', 'height', 'align', 'style', 'wmode', 'play', 'autoplay', 'loop', 'menu', 'allowscriptaccess', 'allowfullscreen', 'controls', 'preload'],
iframe: ['src', 'class', 'height', 'width', 'max-width', 'max-height', 'align', 'frameborder', 'allowfullscreen']