var newWindow;
function OpenNewWindow(url, pu_width, pu_height, scroll) {
var pu_win_settings = "resizable=1,location=0,directories=0,status=0,menubar=0,scrollbars="+scroll+",toolbar=0,width="+pu_width+",height="+pu_height;
newWindow=window.open(url, "", pu_win_settings);
}
//close pop-up window
function closeWindow() {
  if (newWindow && !newWindow.closed) {
  newWindow.close();
  }
}