function WindowOpenCenter(url, name, width, height) {
  posX = screen.width / 2 - width / 2;
  posY = screen.height / 2 - height / 2;
  WindowOpenPos(url, name, width, height, posX, posY);
}

function WindowOpenPos(url, name, width, height, posX, posY) {
  w = window.open(url,name, 'top=' + posY + ', left=' + posX + ', resizable=1, toolbar=0, scrollbars=1, statusbar=1, location=0, status=0'
  +', width='+width+', height='+height);
  w.focus();
  return false;
}

function WindowOpen(url, name, width, height) {
  w = window.open(url,name, 'top=5, left=5, resizable=1, toolbar=0, scrollbars=0, location=0, status=0' + ', width='+width+', height='+height);
  w.focus();
  return false;
}

function WindowOpenScroll(url, name, width, height) {
  w = window.open(url,name, 'top=5, left=5, resizable=1, toolbar=0, scrollbars=1, location=0, status=0' + ', width='+width+', height='+height);
  w.focus();
  return false;
}