Original: Accessibility All browsers from Internet Explorer 5.5 and on (IE6/7/8, Firefox, Safari/Chrome/KHTML, Opera 8/9, etc.) that support JavaScript will properly collapse the elements.
Simplified: Accessibility All browsers from Internet Explorer 5.5 and on (IE5.5/6/7, Firefox, Safari / KHTML, Opera 8/9, etc.) that support JavaScript will properly collapse the elements.