var main_menu_div, menu_animation, menu_visible, menu_init_done;

function init_curr_menu_item()
{
	var parts = document.URL.split("/");
	var pagename = parts[parts.length-1]
	if (pagename == "")
	{
		var menu_item = document.getElementById("about.php");
	}
	else
	{
		var menu_item = document.getElementById(pagename);
	}
	if (menu_item)
	{
		menu_item.className = "menu_item_selected";
	}
}

function init_menu()
{
	main_menu_div = document.getElementById("main_menu_div");
	// Initiate menu animation
	menu_animation = new animation(main_menu_div);
	menu_animation.fwdStartCSS = 'visibility:visible;';
	menu_animation.revEndCSS = ';visibility:hidden;';

	fade_object(menu_animation, 0, 100, 1, 100);
	var menu_button = document.getElementById("menu_button");
	// Enable menu button
	menu_button.style.visibility = "visible";
	menu_init_done = true;

}

function fade_menu(reverse)
{
	if (reverse)
	{
		if (menu_visible)
		{
			menu_animation.play_rev();
		}
		menu_visible = false;
	}
	else
	{
		if (!menu_visible)
		{	
			menu_animation.play_fwd();
		}
		menu_visible = true;
	}
	
	

}