var doc = document;

function setNav(page) {
	doc.getElementById(page).className = 'on';
	swapNav('yes');
}

function swapNav(load,e,el) {
	var links = doc.getElementById('nav').getElementsByTagName('a');
	for (var i = 0; i < links.length; i++) {
		if (load == 'yes') {
			links[i].innerHTML = '';
			links[i].style.backgroundPosition = (links[i].className != 'on') ? '0 0' : '-161px 0';
		} else {
			if (e.type == 'mouseover') {
				links[i].style.backgroundPosition = ((links[i].id == el.id) || (links[i].className == 'on')) ? '-161px 0' : '0 0';
			} else {
				links[i].style.backgroundPosition = (links[i].className == 'on') ? '-161px 0' : '0 0';
			}
		}
	}
}

function showFAQ(action,x) {
	for (var i = 0; i < 7; i++) {
		if (action == 'show' && x == i) {
			doc.getElementById('faq' + x).style.visibility = 'visible';
		} else {
			doc.getElementById('faq' + i).style.visibility = 'hidden';
		}
	}
}