function popup( bild, width, height )
{
	window.open( bild, 'fenster', 'toolbar=no,scrollbars=no,width='+width+',height='+height)
}
openState = new Array();

function opensub( id )
{
	myElem = document.getElementById( 'sub_'+id );
	
	openState[id] = true;
	myElem.style.visibility = "visible";
}

function closesub( id )
{
	myElem = document.getElementById( 'sub_'+id );
	
	openState[id] = false;
	myElem.style.visibility = "hidden";
}