gistfile1.coffee

$(".filter-list").find("input:checkbox").on "click", ->
  childrenSelected = []
  typeSelected = []

  $('.filter-children input:checked').each -> childrenSelected.push($(this).attr('rel'))
  $('.filters input:checked').each -> typeSelected.push($(this).attr('rel'))

  selectors = []

  if childrenSelected.length > 0
   for child in childrenSelected
    if typeSelected.length > 0
      for type in typeSelected
        selectors.push ".#{child}.#{type}"
    else
      selectors.push ".#{child}"
  else
    for type in typeSelected
      selectors.push ".#{type}"

  if selectors.length > 0
    $('.timeline_element').hide()
    $(selectors.join(', ')).show()
  else
    $('.timeline_element').show()