/*
   Toggles the visibility of the element immediately following the <a> element that calls this function.
*/
function showHide(shID) {
	var nextID = shID.nextSibling.nextSibling;
	if (nextID.style.display == "none")
	{
		nextID.style.display = "block";
		shID.firstChild.data = "Hide answer";
	} else {
		nextID.style.display = "none";
		shID.firstChild.data = "Show answer";
	}
}