var $active;

function dropdown($name, $exclusive) {
	var $dropdown = document.getElementById("_" + $name);
	if($dropdown) {
		var $tab = document.getElementById($name);
		if($dropdown.style.display == "block") {
			$dropdown.style.display = "none";
			document.removeClass($tab, "active");
			if($exclusive) $active = "";
		} else {
			$dropdown.style.display = "block";
			document.addClass($tab, "active");
			if($exclusive) {
				dropdown($active, "active");
				$active = $name;
			}
		}
	}
	if(window.onload) window.onload();
}