function setNavSubtitle(content) {
	document.getElementById("navigationSubtitle").innerHTML = content;
}

function resetNavSubtitle() {
	document.getElementById("navigationSubtitle").innerHTML = "";
}

function editText() {
	document.getElementById("preview").style.display="none";
	document.getElementById("admin").style.display="block";
}

function showThumb(id) {
	document.getElementById("thumb").src="img.php?id="+id;
	document.getElementById("thumb").style.display="block";
}

function hideThumb() {
	document.getElementById("thumb").style.display="none";
}

function showImageNavigation() {
	if(document.getElementById("prevImg")) {
		document.getElementById("prevImg").style.display="block";
	}

	if(document.getElementById("nextImg")) {
		document.getElementById("nextImg").style.display="block";
	}
}

function hideImageNavigation() {
	if(document.getElementById("prevImg")) {
		document.getElementById("prevImg").style.display="none";
	}

	if(document.getElementById("nextImg")) {
		document.getElementById("nextImg").style.display="none";
	}
}