=no-link-icon
  :background transparent none !important
  :padding 0 !important
  :margin 0 !important

=link-icon-base
  :padding 2px 22px 2px 0
  :margin -2px 0
  :background-repeat no-repeat
  :background-position right center

=link-icon(!name, !include_base = true)
  @if !include_base
    +link-icon-base
  :background-image= image_url("link_icons/#{!name}")

=link-icons
  a[href^="http:"],
  a[href^="mailto:"],
  a[href^="http:"]:visited,
  a[href$=".pdf"],
  a[href$=".doc"],
  a[href$=".xls"],
  a[href$=".rss"], 
  a[href$=".rdf"],
  a[href^="aim:"]
    +link-icon-base
  a[href^="http:"]
    +link-icon("external.png", false)
  a[href^="mailto:"]
    +link-icon("email.png", false)
  a[href^="http:"]:visited
    +link-icon("visited.png", false)
  a[href$=".pdf"]
    +link-icon("pdf.png", false)
  a[href$=".doc"]
    +link-icon("doc.png", false)
  a[href$=".xls"]
    +link-icon("xls.png", false)
  a[href$=".rss"],
  a[href$=".rdf"]
    +link-icon("feed.png", false)
  a[href^="aim:"]
    +link-icon("im.png", false)