function Otworz(w,s,src) {
if (Nowe) {
if (ie4) Nowe.close();
else if (nn4) Nowe.closed;
Nowe=null
};
var l=(screen.width-w)/2;
var t=(screen.height-s)/2;
Nowe= window.open("","",'width=' + w + ',height=' + s + ',directories=no,resizable=0,scrollbars=no,menubar=no,left=' + l + ',top=' + t);
Nowe.document.write("Concert Halls Plans")
Nowe.focus()
}