leaflet_yandex.js

<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css"/>
<script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet-src.js"></script>
<script src="http://api-maps.yandex.ru/2.1/?lang=en" type="text/javascript"></script>


var map =  L.map('map').setView(new L.LatLng(0, 0), 8).addLayer(new L.Yandex('map'));