         false)
       @dialogElement.getElementsByClassName("optionsPage")[0].addEventListener("click", (clickEvent) ->
           clickEvent.preventDefault()
-          chrome.runtime.sendMessage({handler: "openOptionsPageInNewTab"})
+          chrome.runtime.sendMessage {handler: "openOptionsPageInNewTab"}
         false)
       @dialogElement.getElementsByClassName("toggleAdvancedCommands")[0].addEventListener("click",
         HelpDialog.toggleAdvancedCommands, false)

  toggleAdvancedCommands: (event) ->
    event.preventDefault()
    showAdvanced = HelpDialog.getShowAdvancedCommands()
    HelpDialog.showAdvancedCommands(!showAdvanced)
    Settings.set("helpDialog_showAdvancedCommands", !showAdvanced)

  showAdvancedCommands: (visible) ->
    HelpDialog.dialogElement.getElementsByClassName("toggleAdvancedCommands")[0].innerHTML =
      if visible then "Hide advanced commands" else "Show advanced commands"

    # Add/remove the showAdvanced class to show/hide advanced commands.
    addOrRemove = if visible then "add" else "remove"
    HelpDialog.dialogElement.classList[addOrRemove] "showAdvanced"

initializePreDomReady()
DomUtils.documentReady initializeOnDomReady

  isReady: -> document.body? and @container?

  show: (html) ->
    return if @showing or !@isReady()
    @showing = true
    for placeholder, htmlString of html
      @dialogElement.querySelector("#help-dialog-#{placeholder}").innerHTML = htmlString

    document.body.appendChild @container
    @showAdvancedCommands @getShowAdvancedCommands()

    # Simulating a click on the help dialog makes it the active element for scrolling.
    DomUtils.simulateClick document.getElementById "vimiumHelpDialog"

  hide: ->
    @showing = false
    @container?.parentNode?.removeChild @container

  toggle: (html) ->
