SASS mixin image replacement helper for a series of links

service-links.scss

/**
 * @mixin service-links($services, $attribute: class, $prefix: "", $suffix: "")
 *
 * Image replacement helper for a series of links
 *
 * @param: $services
 *   list of service names -- these should match classes of hrefs on
 *   the <a> in markup and string value in the sprite file name
 * @param: $attribute
 *   the <a> attribute that will be used for the CSS selector
 *   options: class href
 * @param: $prefix
 *   string vavlue before the serive name in sprite file name
 * @param: $suffix
 *   string value after the serive name in sprite file name
 *
 */
@mixin service-links($services, $attribute: class, $prefix: "", $suffix: "") {
  a {
    @include hide-text();
    @include inline-block();
    @each $service in $services{
      @if $attribute == class {
        &.#{$service} {
          @include sprites-sprite(#{$prefix}#{$service}#{$suffix});
          line-height: sprites-sprite-height(#{$prefix}#{$service}#{$suffix});
          height: sprites-sprite-height(#{$prefix}#{$service}#{$suffix});
          width: sprites-sprite-width(#{$prefix}#{$service}#{$suffix});
        }
      }
      @else if $attribute == href {
        &[href*="#{service}"] {
          @include sprites-sprite(#{$prefix}#{$service}#{$suffix});
          line-height: sprites-sprite-height(#{$prefix}#{$service}#{$suffix});
          height: sprites-sprite-height(#{$prefix}#{$service}#{$suffix});
          width: sprites-sprite-width(#{$prefix}#{$service}#{$suffix});
        }
      }
    }
  }
}