function chkLogin()
{
  if(document.getElementById('username').value==''){
    alert('Please enter username');
    document.getElementById('username').focus();
    return false;
  }
  else if(document.getElementById('vPassword').value==''){
    alert('Please enter password');
    document.getElementById('vPassword').focus();
    return false;
  }
  return true;
}

function logoutUser(path)
{ //alert(path);
  document.login.action=SITE_URL +path; //+'home/logout';    
  return true;  
}