var cm=null;
	var ctag=null;
	var constate=null;

	function show(id,tag,onstate,offstate)
{
	el = document.getElementById(id);
	if (el.style.display == 'none')
	{
	if ((el!=cm) && (cm)) {
			hide();
			}
	el.style.display = '';
		tagl = document.getElementById(tag);
		tagl.innerHTML = offstate;
		cm=el;
		ctag=tag;
		constate=onstate;
	} else {
		el.style.display = 'none';
		tagl = document.getElementById(tag);
		tagl.innerHTML = onstate;
		cm=null;
		ctag=null;
		constate=null;
	}
}

function hide()
{
if (cm) {
			cm.style.display='none';
			ctagl = document.getElementById(ctag);
			ctagl.innerHTML = constate;
			}
}