function show_hide(id, show) {
	if (el = document.getElementById(id)) {
		if (null==show) show = el.style.display=='none';
		el.style.display = (show ? '' : 'none');
	}
}

function showorhide(id, toggler) {
	if (document.getElementById(id).style.display == "none") {
		document.getElementById(id).style.display = "block";
		document.getElementById(toggler).innerHTML = "<img src=\"/img/slider2-close-button.gif\"/>";
	} else {
		document.getElementById(id).style.display = "none";
		document.getElementById(toggler).innerHTML = "<img src=\"/img/slider2-open-button.gif\"/>";
	}
}