While this accordion doesn't have the simplest HTML for this type of thing, it is more versatile. It can be used within elements that have been created or adjusted since page load (a bigger deal that you might think) and can effect items not immediately following the clicked event.
Download the Global Accordion code package
Clickable Item #1: Start Open
Ham ball tip bresaola prosciutto. Andouille cow venison salami. Bacon capicola rump swine biltong jowl. Kielbasa tongue boudin turducken pancetta salami. Bresaola capicola beef ribs short loin strip steak bacon. Cow rump cupim short loin turducken shankle.
Clickable Item #2: Start Closed
Brisket andouille cow meatball pork tri-tip tongue drumstick biltong. Ball tip frankfurter shankle brisket. Ham meatball turkey beef, drumstick strip steak t-bone short ribs ball tip turducken venison pork flank boudin picanha. Spare ribs cupim porchetta sirloin pastrami, kielbasa t-bone leberkas pork chop.