// JavaScript Document

var opened;

Event.observe ( window, 'load', menuinit);
function menuinit() {
	$$('.active_menu').each ( function (n) { Event.observe(n, 'click', openmenu.bindAsEventListener(n) ); });
	$$('.submenus').each ( function (n) { if (parseInt(n.getStyle('height'))) opened = n; });
}

function openmenu() {
	var id = this.id.split('_')[1];
	
	if ( opened )  {
		opened.setStyle ( {
			height : '0px'
		} )
	}
	
	if ( $('submenu_' + id ) ) {
		$('submenu_' + id ).setStyle ( {
			height : 'auto'
		} )
		opened = $('submenu_' + id );
	} 
}