function hideshow(which){
	if (!document.getElementById)
		return;
	else {
		var El = document.getElementById(which);
		if (El.style.display=="")
			El.style.display="none";
		else
			El.style.display="";
	}
}

function hide(which){
	if (!document.getElementById)
		return;
	else {
		var El = document.getElementById(which);
		El.style.display="none";
	}
}

function show(which){
	if (!document.getElementById)
		return;
	else {
		var El = document.getElementById(which);
		El.style.display="";
	}
}