$(document).ready(function(){

  $("#error").css('display', 'inline', 'important');
  $("#error").html("<br>");

  $("#login").click(function(){
    username=$("#username").val();
    password=$("#password").val();
    $.ajax({
      type: "POST",
      url: "zetatech-admin.php",
      data: "username="+username+"&password="+password+"&login=Login",
      success: function(response) {

        var answer = JSON.parse(response);

        if(answer.return == 'true') {
          $("#content").html(answer.string);
        }
        else {
          $("#error").html(answer.string);
        }
      },

      beforeSend: function() {
        $("#error").html("Loading...");
      },

      error: function() {
        $("#error").html("Error");
      }
    });

    return false;
  });
});