var theMenu;

var theMenuButton;

var theMenuParent;

var nextMenu;

var currentMenu;



function menu_clicked(a) {

	var menuButton = a;

	var menuParent = a.parentNode.parentNode;

	

	d = menuParent.getElementsByTagName('DIV');

	for (i = 0; i < d.length; i++) {

		if (d[i].className == 'menu') {

			menu = d[i];

			break;

		}

	}

	

	if (menu) {

		if (currentMenu) {

			theMenu = currentMenu;

			currentMenu = null;

		}



		if (theMenu) {

			if (theMenu != menu) {

				nextMenu = menu;

			}

			close_menu(theMenu);

		} else {

			open_menu(menu);

		}

		return false;

	} else {

		return true;

	}

}



var animatingMenu;

var targetHeight;

var animator;



function open_menu(menu) {

	menu.parentNode.className = 'opening';

	menuItems = menu.getElementsByTagName('LI');

	animatingMenu = menu;

	targetHeight = menuItems.length * 18 + 7;

	//menu.style.height = menuHeight + 'px';

	menu.style.height = '0px';

	animator = setInterval('slide_open()', 10);

}



function slide_open() {

	if (animatingMenu) {

		h = parseInt(animatingMenu.style.height) + 20;

		if (h >= targetHeight) {

			clearInterval(animator);

			animatingMenu.style.height = 'auto';

			animatingMenu.parentNode.className = 'open';

			theMenu = animatingMenu;

		} else {

			animatingMenu.style.height = h + 'px';

		}

	}

}



function close_menu(menu) {

	menu.parentNode.className = 'opening';

	menuItems = menu.getElementsByTagName('LI');

	animatingMenu = menu;

	targetHeight = menuItems.length * 18 + 7;

	menu.style.height = targetHeight + 'px';

	animator = setInterval('slide_closed()', 10);

}



function slide_closed() {

	if (animatingMenu) {

		h = parseInt(animatingMenu.style.height) - 20;

		if (h <= 0) {

			clearInterval(animator);

			animatingMenu.style.height = 'auto';

			animatingMenu.parentNode.className = 'closed';

			if (nextMenu) {

				open_menu(nextMenu);

				nextMenu = null;

			}

			theMenu = null;

		} else {

			animatingMenu.style.height = h + 'px';

		}

	}

}