function toggleContent(id) {
	var ele;
	ele = eval(document.getElementById(id + 'Arrow').style);

	if (document.getElementById(id).style.display == 'none') {
		document.getElementById(id).style.display = 'block';
		ele.backgroundImage = "url(images/functionality_arrow_down.gif)";
	}
	else {
		document.getElementById(id).style.display = 'none';
		ele.backgroundImage = "url(images/functionality_arrow.gif)";
	}
	return false;
}