var win = null;

function sound() {
	if (!win || win.closed) {
		klangein();
	} else {
		klangaus();
	}
}


function klangaus() {
	document.getElementById('soundlink').innerHTML = '<img src="http://www.freibergerpils.de/FREIBERGER/img/musik-ein.png" alt="Musik ein" border="0" />';
	window.open("","Sound").close();
}

function klangein() {
	win = window.open("http://www.freibergerpils.de/FREIBERGER/popupsong.html","Sound","width=125,height=40,left=20,top=40");
	document.getElementById('soundlink').innerHTML = '<img src="http://www.freibergerpils.de/FREIBERGER/img/musik-aus.png" alt="Musik aus" border="0" />';
}

function check( index)
{
    if( index == 4 )
        document.getElementById("sameadd").style.display = "none";
    else
        document.getElementById("sameadd").style.display = "table-row";
}