$.fn.oneaccordeon = function(closeable) {

	$(this).each( function(a) {

		var activeItem = 0;
		var cont = this;
		$(".active .itemcontent", cont).show();

		$(".item", cont).each( function(i) {

			var item = this;
			$(".itemhead", this).bind("click", function() {

				if (activeItem != i) {

					$(".active .itemcontent", cont).slideUp(500);
					$(".active", cont).removeClass("active");
					$(item).addClass("active");
					$(".itemcontent", item).slideDown(500);



					activeItem = i;
				} else {

					if(closeable) {

						$(".active .itemcontent", cont).slideUp(500);
						$(".active", cont).removeClass("active");
						activeItem = -1;

					}

				}

			});


		});


	});
};