{{ $params := dict }}
{{ if .IsNamedParams }}
    {{ $params = .Params }}
{{ else }}
    {{ $params (dict "img" (.Get 0)) }}
{{ end }}
{{ if not (resources.Get $params.img) }}
    {{ $params = merge $params (dict "img" (.Page.Resources.GetMatch $params.img)) }}
{{ end }}
{{ partial "lazyimg" $params }}