var timerID = null;
var timerON = false;
var keepon = 7;

function stoptime()
{
	if ( timerON )
	{
		clearTimeout(timerID);
		timerID = null;
		timerON = false;
	}
}

function starttime(id)
{
	if ( timerON == false )
	{
		timerID = setTimeout( "setVisible("+id+",false)", 1000 );
		timerON = true;
	}
}


function turnon (id)
{
	setVisible(1,false);
	// setVisible(3,false);
	setVisible(4,false);

	setVisible(id,true); 

	if ( id == 1 || id == 3 || id == 4 )
		stoptime;
}


function turnoff (id)
{
	if ( id == 1 || id == 3 || id == 4 )
		starttime(id);
	else
		setVisible(id,false);
}

function setVisible(id,value)
{
	var hot = "hotnav"+id;
	var norm = "nav"+id;
	var subnav = "subnav"+id;

	var myHotElement = document.getElementById(hot);
	var myNormElement = document.getElementById(norm);

	if ( id == 1 || id == 3 || id == 4 )
		var mySubElement = document.getElementById(subnav);

	if(value)
	{
		myHotElement.style.visibility="visible";
		myNormElement.style.visibility="hidden";
		if ( id == 1 || id == 3 || id == 4 )
			mySubElement.style.visibility="visible";
	}
	else
	{
		if ( id != keepon )
		{
			myHotElement.style.visibility="hidden";
			myNormElement.style.visibility="visible";
		}

		if ( id == 1 || id == 3 || id == 4 )
			mySubElement.style.visibility="hidden";
	}
}