// JavaScript Document

// Pre-cache highlighted menu items
var pic=new Array(11);
pic[1] = new Image();
pic[2] = new Image();
pic[3] = new Image();
pic[4] = new Image();
pic[5] = new Image();
pic[6] = new Image();
pic[7] = new Image();
pic[8] = new Image();
pic[9] = new Image();
pic[10] = new Image();

pic[1].src = "images/menu_news_on.png";
pic[2].src = "images/menu_forums_on.png";
pic[3].src = "images/menu_downloads_on.png";
pic[4].src = "images/menu_team_on.png";
pic[5].src = "images/menu_images_on.png";
pic[6].src = "images/menu_faq_on.png";
pic[7].src = "images/menu_mission_authors_on.png";
pic[8].src = "images/menu_mission_archive_on.png";
pic[9].src = "images/menu_missions_on.png";
pic[10].src = "images/menu_source_code_on.png";

function getContainedImage(node)
{
	var images = node.getElementsByTagName("img");
	if (images.length == 0) return null;

	return images[0];
}

function frob(item)
{
	var img = getContainedImage(item);
	if (img == null) return;
	
	img.src = img.src.replace(/_off\./, "_on.");
}

function unfrob(item)
{
	var img = getContainedImage(item);
	if (img == null) return;
	
	img.src = img.src.replace(/_on\./, "_off.");
}