/**
 * Menu.js 
 *
 * Author: Scriptura Limited
 *
 * www.scriptura.co.uk
 *
 */

function MenuButton(id)
{
	this.out = new Image();
	this.out.src = "assets/images/menu/" + id + ".gif";
	this.over = new Image();
	this.over.src = "assets/images/menu/" + id + "_on.gif";
}

function Menu(menuItems)
{
	this.menuButtons = {};

	for (var i in menuItems)
	{
		this.menuButtons[menuItems[i]] = new MenuButton(menuItems[i]);
	}
}

Menu.prototype.activate = function(id)
{
	if (document.images)
	{
		document.images[id].src = menu.menuButtons[id].over.src;
	}
}

Menu.prototype.deactivate = function(id)
{
	if (document.images)
	{
		document.images[id].src = menu.menuButtons[id].out.src;
	}
}

if (!window.menu)
{
	window.menuItems = ['home', 'company', 'services', 'portfolio', 'gallery', 'contact'];
	window.menu = new Menu(window.menuItems);
}