jQueryUI + jQuery.noConflict

gistfile1.coffee

(->
  jQuery = undefined
  scriptLoadHandler = ->
    main()
 
  main = ->
    window.jQuery.getScript("http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js").done ->
      jQuery = window.jQuery.noConflict(true)
 
      jQuery(document).ready ($) ->
        alert(jQuery.fn.jquery)
 
 
 
  if window.jQuery is `undefined` or window.jQuery.fn.jquery isnt "1.8.2"
    script_tag = document.createElement("script")
    script_tag.setAttribute "type", "text/javascript"
    script_tag.setAttribute "src", "http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"
    if script_tag.readyState
      script_tag.onreadystatechange = ->
        scriptLoadHandler()  if @readyState is "complete" or @readyState is "loaded"
    else
      script_tag.onload = scriptLoadHandler
    (document.getElementsByTagName("head")[0] or document.documentElement).appendChild script_tag
  else
    jQuery = window.jQuery
    main()
)()