function toggleFullScreen(element){
	var content = document.getElementById(element);
	var popup = document.getElementById("popup");

	if (popup.style.visibility == "visible") {
		popup.innerHTML = "";
		popup.style.visibility = "hidden";
		popup.style.position = "relative";
		document.getElementById("toggle").innerHTML = "Read full screen";
	}
	else {
		popup.style.position = "absolute";
		popup.style.top = '190px';
		document.getElementById("toggle").innerHTML = "Return";
		popup.innerHTML = content.innerHTML;
		popup.style.visibility = "visible";
	}
	
}