function openWin(url) {
 var w = 870;
 var h = 720;
 var le = (screen.availWidth - w) /2;
 var he = (screen.availHeight -h) /2;
 win = window.open(url,'galerie','height='+h+',width='+w+',status=no,toolbar=no,scrollbars=1,menubar=no,location=no,resizable=yes,left='+le+', top='+he,false);
 win.focus();
}

function openWin2(url,w,h) {
 var le = (screen.availWidth - w) /2;
 var he = (screen.availHeight -h) /2;
 win = window.open(url,'galerie','height='+h+',width='+w+',status=no,toolbar=no,scrollbars=1,menubar=no,location=no,resizable=yes,left='+le+', top='+he,false);
 win.focus();
}