var tid=null;
var menOpen=null;
var tbar=null;
var barOpen=null;

function hide(id)
{
    tid=window.setTimeout("document.getElementById('"+id+"').style.visibility='hidden'", 500);
}

function openNext(id)
{
	if(menOpen!=null) menOpen.style.visibility="hidden";
	menOpen=document.getElementById(id);
	menOpen.style.visibility='visible';
	clearTimeout(tid);
	if(barOpen!=null) barOpen.style.visibility="hidden";
}

function hideBar(id)
{
    tbar=window.setTimeout("document.getElementById('"+id+"').style.visibility='hidden'", 500);
}

function showBar(id)
{
	if(barOpen!=null) barOpen.style.visibility="hidden";
	barOpen=document.getElementById(id);
	barOpen.style.visibility='visible';
	clearTimeout(tbar);
}