/* ----------------------------------------------------- */
/* JavaScript support for www.teenrelationships.org      */
/* ----------------------------------------------------- */

/* Kill parent framesets, except Wordpress preview frame */
if (top.location != self.location) {
	if (self.location.search.indexOf('preview=true') == -1) {
		top.location.replace(self.location.href);
	}
}

/* Create a queue for window.onload events               */
/*   Example usage:                                      */
/*   addLoadEvent(nameOfSomeFunctionToRunOnPageLoad);    */
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
	return true;
}

/* Image swapping     */
var imageOn  = new Array();
var imageOff = new Array();

var W3CDOM = (document.createElement && document.getElementsByTagName);

function initHighlight()
{
	if (!W3CDOM) return;
	var nav  = document.getElementById('navigation');
	var imgs = nav.getElementsByTagName('img');
	for (var i = 0; i < imgs.length; i++) {
		imgs[i].onmouseover = highlightOn;
		imgs[i].onmouseout  = highlightOff;
		var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf('.'));
		imageOn[i]  = new Image();
		imageOff[i] = new Image();
		imageOn[i].src  = imgs[i].src.substring(0, imgs[i].src.lastIndexOf('.')) + "2" + suffix;
		imageOff[i].src = imgs[i].src;
		imgs[i].number = i;
	}
	return true;
}

function highlightOn()
{
	this.src = imageOn[this.number].src;
}

function highlightOff()
{
	this.src = imageOff[this.number].src;
}

/* Hide quiz answers */
function quizSetup()
{
	var number = 10;
	for (i = 1; i <= number; i++) {
		var q = 'q' + i;
		document.getElementById(q + 'yes').style.display = 'none';
		document.getElementById(q + 'no').style.display  = 'none';
	}
	return true;
}

/* Load all onLoad functions */

// Image swapping currently not in use
//addLoadEvent(initHighlight);

/* Show/hide answers to quiz */
function showAnswer(number, answer)
{
	var ans = 'q' + number + answer;
	if (answer == 'yes')
		var opp = 'q' + number + 'no';
	else
		var opp = 'q' + number + 'yes';
	document.getElementById(opp).style.display = 'none';
	document.getElementById(ans).style.display = '';
	return true;
}