window.addEventListener("load", function load(event){
	mapzen.whosonfirst.spelunker.init();
	if (document.getElementById('map')) {
		var map = mapzen.whosonfirst.leaflet.tangram.map('map');
		slippymap.crosshairs.init(map);
	}
});

window.addEventListener("load", function load(event){
	mapzen.whosonfirst.spelunker.init();
	if (document.getElementById('map')) {
		var map = mapzen.whosonfirst.leaflet.tangram.map('map');
		map.on('load', function() {
			slippymap.crosshairs.init(map);
		});
	}
});

fix JS error 'set map center and zoom first'