<!-- using cache javascript/default/ -->
var previd='';
var prevcls='';
var timeoutid=0;
var ie = document.all?true:false;
var ns47 = document.layers?true:false;
var bShowMainmenu = false;

function getDiv(id){
	if(ie) return document.all.item(id);
	else if(ns47) return document.layers[id];
	else return document.getElementById(id);
}

function getStyle(id)
{
	//window.status = 'getStyle ' + id;
	if(ie) return document.all.item(id).style;
	else if(ns47) return document.layers[id];
	else return document.getElementById(id).style;
}

function show(id){
	//window.status = 'show ' + id;

	var styleEl = getStyle('sub'+id);
	if( styleEl == null )
		window.status = 'ERROR: cannot show ' + id;
	else
		styleEl.visibility = 'visible';

	if( bShowMainmenu )
	{
		var classEl = getDiv('ref'+id);
		prevcls = classEl.getAttribute('className');
		classEl.setAttribute('className', prevcls + 'sel'); // selected
	}
}

function hide(id){
	//window.status = 'hide ' + id;

	var styleEl = getStyle('sub'+id);
	if( styleEl == null )
		window.status = 'ERROR: cannot hide ' + id;
	else
		styleEl.visibility = 'hidden';

	if( bShowMainmenu )
	{
		var classEl = getDiv('ref'+id);
		classEl.setAttribute('className', prevcls); // selected
	}
}

function stoptimeout()
{
	if(timeoutid != 0) {
		window.clearTimeout(timeoutid);
		timeoutid=0;
	}
}
/*
function isParent(pid,cid)
{
	var pel = getDiv(pid);
	var cel = getDiv(cid);
	while( cel.id != 'menuroot' && cel != null )
	{
		if( cel.id == pel.id ) return true;
		cel = cel.parentElement;
	}
	return false;
}
*/
function showsub(id)
{
	stoptimeout();
	if( previd != '' && id != previd /* && (id == '' || !isParent('sub'+previd, 'sub'+id)) */ ) hide(previd);
	if( id != '' && id != previd ) show(id);
	previd = id;
}
function hidesub(id)
{
	stoptimeout();
	timeoutid = window.setTimeout('showsub(\'\')', 1000);
}