Bad Javascript

gistfile1.js

var hider = function() {
  $("#some_div").hide();
}

var shower = function() {
  $("#some_div").show();
}

var total_column = function() {
  var total = 0;
  (".important_column").children().each(function() {
    total += this.val();
  }
  return total;
}

$(function() {
  $("#some_button").bind('click', hider);
  $("#some_other_button").bind('click', shower);

  $("form").bind('submit', $("#feedback").html(total_column()));
}