var timeout	= 1;
var closetimer	= 0;
var popupmenuitem	= 0;


function popupopen(id)
{	
	// schliessen abbrechen
	popupcancelclosetime();

	// altes menue schliessen
	if(popupmenuitem) ppmenuitem.style.visibility = 'hidden';

	// neues menue oeffnen
	ppmenuitem = document.getElementById(id);
	ppmenuitem.style.visibility = 'visible';

}

function popupclose()
{
	if(ppmenuitem) ppmenuitem.style.visibility = 'hidden';
}


function popupclosetime()
{
	closetimer = window.setTimeout(popupclose, timeout);
}


function popupcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}


document.onclick = popupclose;


function changebackground(id) {
  document.all.DynText.style.backgroundImage = "images/nav_topmenu_back_hover.jpg";
}