/*

Author: mg12

Update: 2008/08/11

Author URI: http://www.neoease.com/

*/

(function() {

var Class = {

	create: function() {

		return function() {

			this.initialize.apply(this, arguments);

		}

	}

}

var GhostlyMenu = Class.create();

GhostlyMenu.prototype = {

	initialize: function(target, align, sub) {

		this.obj = cleanWhitespace(target);

		this.align = align || 'left';

		this.sub = sub || -1;

		this.menu = this.obj.childNodes;

		if (this.menu.length < 2) { return; }

		this.title = this.menu[0];

		this.body = this.menu[1];

		cleanWhitespace(this.body).firstChild.getElementsByTagName('a')[0].className += 'first';

		setStyle(this.body, 'visibility', 'hidden');

		setStyle(this.body, 'display', 'block');

		addListener(this.obj, 'mouseover', bind(this, this.activate), false);

		addListener(this.obj, 'mouseout', bind(this, this.deactivate), false);

	},

	activate: function() {

		if(this.sub == 1) {

			var pos = currentOffset(this.title);

			var top = pos[1] + 3;

			var left = getWidth(this.body) - 6;

		} else {

			var pos = cumulativeOffset(this.title);

			var top = pos[1] + getHeight(this.title);

			var left = pos[0] - 1;

		}

		if(!/current/.test(this.title.className)) {

			this.title.className += ' current';

		}

		setStyle(this.body, 'left', left + 'px');

		setStyle(this.body, 'top', top + 'px');

		setStyle(this.body, 'visibility', 'visible');

	},

	deactivate: function(){

		this.title.className = this.title.className.replace('current', '');

		var thismenu = this;

		var tid = setInterval( function() {

			clearInterval(tid);

			if (!/current/.test(thismenu.title.className)) {

				setStyle(thismenu.body, 'visibility', 'hidden');

			}

			return false;

		}, 400);

	}

}

$A = function(iterable) {

	if(!iterable) {

		return [];

	}

	if(iterable.toArray) {

		return iterable.toArray();

	} else {

		var results = [];

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

			results.push(iterable[i]);

		}

		return results;

	}

}

bind = function() {

	var array = this.$A(arguments);

	var func = array[array.length - 1];

	var _method = func, args = array, object = args.shift();

	return function() {

		return _method.apply(object, args.concat(array));

	}

}

getHeight = function(element) {

	return element.offsetHeight;

}

getWidth = function(element) {

	return element.offsetWidth;

}

setStyle = function(element, key, value) {

	element.style[key] = value;

}

getStyle = function(element, key) {

	return element.style[key];

}

cleanWhitespace = function(list) {

	var node = list.firstChild;

	while (node) {

		var nextNode = node.nextSibling;

		if(node.nodeType == 3 && !/\S/.test(node.nodeValue)) {

			list.removeChild(node);

		}

		node = nextNode;

	}

	return list;

}

currentOffset = function(element) {

	var valueT = element.offsetTop  || 0;

	var valueL = element.offsetLeft || 0;

	return [valueL, valueT];

}

cumulativeOffset = function(element) {

	var valueT = 0, valueL = 0;

	do {

		valueT += element.offsetTop  || 0;

		valueL += element.offsetLeft || 0;

		element = element.offsetParent;

	} while (element);

	return [valueL, valueT];

}

addListener = function(element, name, observer, useCapture) {

	if(element.addEventListener) {

		element.addEventListener(name, observer, useCapture);

	} else if(element.attachEvent) {

		element.attachEvent('on' + name, observer);

	}

}

function loadMenus() {

	var menubar = document.getElementById('navigation');

	if (menubar) {

		var list = menubar.getElementsByTagName('ul');

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

			var menu = list[i].parentNode;

			if(menu.parentNode === menubar) {

				new GhostlyMenu(menu, 'left');

			} else {

				new GhostlyMenu(menu, 'left', 1);

				menu.firstChild.className += ' subtitle';

			}

		}

	}

}

if (document.addEventListener) {

	document.addEventListener("DOMContentLoaded", loadMenus, false);

} else if (/MSIE/i.test(navigator.userAgent)) {

	document.write('<script id="__ie_onload_for_elegantbox" defer src="javascript:void(0);"></script>');

	var script = document.getElementById("__ie_onload_for_elegantbox");

	script.onreadystatechange = function() {

		if (this.readyState == 'complete') {

			loadMenus();

		}

	}

} else if (/WebKit/i.test(navigator.userAgent)) {

	var _timer = setInterval( function() {

		if (/loaded|complete/.test(document.readyState)) {

			clearInterval(_timer);

			loadMenus();

		}

	}, 10);

} else {

	window.onload = function(e) {

		loadMenus();

	}

}

})();