function sub( string, vars ) {
  return string.replace(/#{(.*?)}/g, function(match, varname) { return vars[varname] } )
}

function jsonFlickrApi(data) {
  for (var i = 0; i < data.photos.photo.length; i++) {
    var photo = data.photos.photo[i];
    photo['img'] = sub("http://farm#{farm}.static.flickr.com/#{server}/#{id}_#{secret}_s.jpg", photo);
    photo['link'] = sub("http://flickr.com/photos/#{owner}/#{id}", photo);
    var html = sub('<a href="#{link}"><img src="#{img}"></a>', photo);
    $("#event-photos").append(html);
  }
}