function showLoginForm()
{
  window.scroll(0,0);
  var div = document.getElementById('loginForm');
  var scroll  = getScrollXY();
  var left    = 200;
  var top     = 200;
  
  if (document.body.clientWidth)
  {
    left  = (document.body.clientWidth/2  + scroll[0]  - 130);
  }
  else
  {
    left = (window.innerWidth)/2 - 130 + scroll[0];
  }
  //alert('xOffset='+ left + ', yOffset=' + top);

  div.style.top  = top+'px';
  div.style.left = left+'px';
  div.style.display = 'block';

  document.getElementById('baselogin').focus();

  return false;
}

function hideLoginForm()
{
  document.getElementById('loginForm').style.display = 'none';
  return false;
}