function addEvent(obj, evType, fn, useCapture) {
  	if (obj.addEventListener) {
    	obj.addEventListener(evType, fn, useCapture);
    	return true;
  	}
  	else if (obj.attachEvent) {
    	var r = obj.attachEvent("on"+evType, fn);
    	return r;
  	}
  	else {
    	//alert("Handler could not be attached");
  	}
}

function removeEvent(obj, evType, fn, useCapture) {
  	if (obj.removeEventListener) {
    	obj.removeEventListener(evType, fn, useCapture);
    	return true;
  	}
  	else if (obj.detachEvent) {
    	var r = obj.detachEvent("on"+evType, fn);
    	return r;
  	}
  	else {
    	//alert("Handler could not be removed");
  	}
}

function goLocation(thisFormSelect) {
  	var thisSelection = thisFormSelect.options[thisFormSelect.selectedIndex].value;
  	if (thisSelection != "") {
    	location = thisSelection;
	}
}

function goChapter(url) {
  	if (url != "") {
    	location = url;
	}
}

function toggleBox(element) {
	if($(element).style.display=='none') {
		new Effect.SlideDown(element);
	}
	else {
		new Effect.SlideUp(element);
	}
}

/*function init() {
	var links = document.getElementsByTagName('a');
	for(var i=0; i<links.length; i++) {
		addEvent(links[i], 'mouseover', hideLinkStatus, true);
	}
}

function hideLinkStatus(e) {
	window.status = '';
	if (e && e.preventDefault) {
    	e.preventDefault();
	}
  	return false;
}

addEvent(window, 'load', init, true);*/