function submit_click()
    {
      var email = $('#email').val();
      var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
      if( reg.test(email) == false ) {
        alert('Please enter valid e-mail address!');
        $('#email').focus();
        return false;
      }
      $('#signup').html("Please wait...");
      $.post('http://connex.io/submit.php', {email: email}, function(data) { 
        if( data == "OK") 
           $('#signup').html("Thank you! We will keep you updated."); 
        else
           $('#signup').html("Ooops, we are very sorry but something failed.<br />Please try again later..");  
      } )
      pageTracker._trackEvent('LandingPage', 'Signup'); 
      return false;
    }
    function survey_click()
    {
      pageTracker._trackEvent('LandingPage', 'Survey'); 
    }