/* alert("JS loaded"); */

var a_elements = new Array();  // store list (LI) elements
var count = 0;
var initialised = false;
var countinit = 0;

var currentHighlight = 0;
var iterationCounter = 0;

/*
	fade questions
*/
function initQuestions() {
	/*
		get array of li elements in ul#qlist
	*/
	if (document.getElementById) {
		qList = document.getElementById("qlist");
		for (i=0; i<qList.childNodes.length; i++) {
			node = qList.childNodes[i];
			if (node.nodeName=="LI") {
				a_elements[count] = new Array();
				a_elements[count][0] = node;
				fadeElement(node);
				count++;
				//alert(node.currentStyle.hasLayout); // IE 6
				//return false;
			}
		}
	} else {
		return false;
	}
}

function fadeElement(el) {
	/*
		add fade behaviours to array for each element
	*/
	a_elements[count][1] = new fx.Opacity(el, {duration: 3000, onComplete: function()
  	{
  		if (!initialised) {
  			countinit++;
  		} 
  		if (countinit == (a_elements.length - 1)) {
  			initialised = true;
  			run();
  		}
  		//alert(countinit + " : " + (a_elements.length - 1));
  	}
	});
	if (count) {
		a_elements[count][1].toggle();
	}
}


function run() {
	/*
		if initialised run
	*/
	if((iterationCounter % 2) == 0) {
  		a_elements[currentHighlight][1].toggle();
  		if (currentHighlight == (a_elements.length - 1)) {
  			currentHighlight = 0;
  		} else {
  			currentHighlight++;
  		}
  		a_elements[currentHighlight][1].toggle();
  	}
  	iterationCounter++;
}
/*
	end fade questions
*/


function addEvent(obj, evType, fn) {
  if (obj.addEventListener) {
    obj.addEventListener(evType, fn, false);
    return true;
  } else if (obj.attachEvent){
    var r = obj.attachEvent("on"+evType, fn);
    return r;
  } else {
    return false;
  }
}

/* onload initialise */
addEvent(window, 'load', initQuestions);