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function defaultAjaxErrorHandler(result, isAjaxError) {
  // do stuff, hide spinner etc...
  var defaultAjaxError = "Your friendly error message";
  var errorToken = "Error:";

  if(!isUndefinedOrNull(result) && !isUndefinedOrNull(result.responseText)) {
    if(result.responseText.startsWith(errorToken)) {
      // localhost
      var x = (result.responseText.length > 350) ? 350 : result.responseText.length;
      alert(result.responseText.substring(0, x) + "...\n\n  - Check firebug console for more info.\n  - This message for localhost only.");

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  $j.ajax({
    type: "POST",
    url: "/some_controller/some_action",
    data: {
      first_name: $j("#first_name").val(),
      last_name: $j("#last_name").val(),
    },
    success: function(data, textStatus) {
      // do what you like
    },

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<a href="http://www.google.com/" target="_blank">Google</a>

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<a href="http://www.google.com/" class="target-blank">Google</a>

<script type="text/javascript">
$j(document).ready(function() {
  $j('a.target-blank').click(function() {
    this.target = '_blank';
  });
}
</script>

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require 'net/http'
require 'uri'

def get_html_content(requested_url)
  url = URI.parse(requested_url)
  full_path = (url.query.blank?) ? url.path : "#{url.path}?#{url.query}"
  the_request = Net::HTTP::Get.new(full_path)

  the_response = Net::HTTP.start(url.host, url.port) { |http|
    http.request(the_request)

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# remove all script tags
html_content = html_content.gsub(/<script.*?>[\s\S]*<\/script>/i, "")

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.pagination { padding: 3px; margin: 3px; } 
.pagination a { padding: 2px 5px 2px 5px; margin: 2px; border: 1px solid #aaaadd; text-decoration: none; color: #000099; } 
.pagination a:hover, 
.pagination a:active { border: 1px solid #000099; color: #000; } 
.pagination span.current { padding: 2px 5px 2px 5px; margin: 2px; border: 1px solid #000099; font-weight: bold; background-color: #000099; color: #FFF; } 
.pagination span.disabled { padding: 2px 5px 2px 5px; margin: 2px; border: 1px solid #eee; color: #ddd; }

/* From http://workingwithrails.com/railsplugin/4765-will-paginate */

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# see http://gist.github.com/341290 (sort_index_controller_usage.rb)
# see http://gist.github.com/341295 (sort_index_view_usage.html.erb)

# The classes in this module help to enable sorting on index pages
# building sql order clauses and rendering html table header links
module SortIndex
  SORT_KEY_ASC = 'asc'
  SORT_KEY_DESC = 'desc'

  SORT_DIRECTION_MAP = { 

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# see http://gist.github.com/341278 (sort_index.rb)
# see http://gist.github.com/341295 (sort_index_view_usage.html.erb)

# this example is an employees controller and using the will_paginate plugin
# however code should work fine with a standard ActiveRecord#find(:all, :order => ...
# put the sort_index.rb code in your rails lib directory

class EmployeesController < ApplicationController
  # index sort constant config for sorting index action
  # default is order by updated_at DESC

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<%-
# see http://gist.github.com/341278 (sort_index.rb)
# see http://gist.github.com/341290 (sort_index_controller_usage.rb)
-%>
<table style="width:100%">
  <thead>
    <tr>
      <%= @sortable.header_link('full_name', 'Name') %>
      <%= @sortable.header_link('email', 'Email') %>
      <%= @sortable.header_link('updated_at', 'Updated at') %>