window.onload = function() {
	initMenu();
}

var effect = 'slide';

var menu = null;
var menuItems = new Array();
var menuEffects = new Array();
	
function initMenu() {
	menu = document.getElementById("menu");
	if(menu == 'undefined') {
		return;
	}
	menuItems = menu.getElementsByTagName("li");
	
	for(var i = 0; i < menuItems.length; i++){
    	if(menuItems[i+1] && menuItems[i+1].id ){
			// hide submenu
			$(menuItems[i+1].id).hide();
			// set event for clicking the parent
			menuItems[i].firstChild.onclick = doEffect;
			var selected = getCookie('menu');
			if(selected && selected == menuItems[i+1].id) {
				new Effect.toggle($(menuItems[i+1].id), effect)
			}
    	}
	}
}

function doEffect() {
	var id = this.parentNode.nextSibling.id;
	if(!id)
		id = this.parentNode.nextSibling.nextSibling.id;
	var selected = getCookie('menu');
	if($(id).visible()) {
		// we are closing the submenu
		deleteCookie('menu', '/', null);
	}
	else {
		// we are opening the submenu
		setCookie('menu', id, null, '/', null, null);
		// hide previously selected (only if it is different from current)
		if(selected)
			new Effect.toggle($(selected), effect);
	}
	new Effect.toggle($(id), effect)
	return false;
}

/*** cookie part - start ***/
function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		( ( path ) ? ';path=' + path : '' ) +
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + '=' +
			( ( path ) ? ';path=' + path : '') +
			( ( domain ) ? ';domain=' + domain : '' ) +
			';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}
/*** cookie part - end ***/