// JavaScript Document
function selectSubPage(el, id) {
	var links = $('pageLinks').select('[class="selected"]');
	for (var i = 0; i < links.length; i++) {
		links[i].className = '';
		links[i].style.width = '122px';
	}
	el.className = 'selected';
	el.style.width = '123px';

	var pages = $('pageContentBlock').select('[class="subPageContent"]');

//	alert($('pageContentBlock').className);

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

		if (pages[i].style.display == 'block')
			pages[i].style.display = 'none';
	}
	$('content_' + id).style.display = 'block';

}

function showNextFact() {
	//var facts = document.getElementByClassName('fact');
	var facts = $('didYouKnow').select('[class="fact"]');
	var selectedFact = 0;
	var newSelectedFact = -1;
	for (var i = 0; i < facts.length; i++) {
		if (facts[i].style.display == 'block') {
			selectedFact == i;
			newSelectedFact = i + 1;
			facts[i].style.display = 'none';
		}
	}
	if (newSelectedFact >= 0 && newSelectedFact < facts.length) {
		facts[newSelectedFact].style.display = 'block';
		$('factPrevious').style.display = 'block';
	}
	if (newSelectedFact == (facts.length - 1)) {
		$('factNext').style.display = 'none';
	}
}

function showPreviousFact() {
	//var facts = document.getElementByClassName('fact');
	var facts = $('didYouKnow').select('[class="fact"]');
	var selectedFact = 0;
	var newSelectedFact = -1;

	for (var i = 0; i < facts.length; i++) {
		if (facts[i].style.display == 'block') {
			selectedFact == i;
			newSelectedFact = i - 1;
			facts[i].style.display = 'none';
		}
	}
	if (newSelectedFact >= 0) {
		facts[newSelectedFact].style.display = 'block';
	}
	if (facts.length > 1 && newSelectedFact < (facts.length - 1)) {
		$('factNext').style.display = 'block';
	}
	if (newSelectedFact == 0) {
		$('factPrevious').style.display = 'none';
	}
}