function openWindow(documentName) {
   window.open(documentName, "popup", "width=500,height=500,center,toolbar=no,location=no,directories=0,status=no,menubar=no,scrollbars=yes,resizable=yes");
}

function openWindowmap(documentName) {
   var winName = window.opener.name;
   window.open(documentName,winName,'');
}