function showImages()	{    
	document.getElementById('imagestable').style.display = "block";
}	

function rotateImages(imagesArray, rotatedImage, time, currentImageIndex) {
	
	if (currentImageIndex >= imagesArray.length) {
  		currentImageIndex = 0;
	}
	
  rotatedImage.src = imagesArray[currentImageIndex];
	window.setTimeout(function() { rotateImages(imagesArray, rotatedImage, time, currentImageIndex + 1)}, time);
}

function showHideAnswer(answer_id) {
	if (document.getElementById('answer' + answer_id).style.display == "none") {
		document.getElementById('answer' + answer_id).style.display = "table-row";
		document.getElementById('question' + answer_id).innerHTML = "- ";
	} else {
		document.getElementById('answer' + answer_id).style.display = "none";
		document.getElementById('question' + answer_id).innerHTML = "+ ";
	}
}