function popupWindow(sUrl, iWidth, iHeight)
{
    var popup;
    popup = window.open(sUrl,'Earthrevealed','toolbar=no,location=no,hotkeys=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,screenX=50,screenY=50,width=' + iWidth + ',height=' + iHeight,true);
    popup.focus(); 
}