function toggle(n) {
	var divs = document.getElementsByTagName("div");
	for ( var i = 0; i < divs.length; i++ ) {
		if ( divs[i].className == "answer" && divs[i].getAttribute("id") != n ) {
			divs[i].style.display = "none";
		} else if ( divs[i].className == "answer" && divs[i].getAttribute("id") == n ) {
				divs[i].style.display == "none" ? divs[i].style.display = "" : divs[i].style.display = "none";
		}	
	}

}