diff --git a/examples/marker/marker.html b/examples/marker/marker.html
index 599b8425..58024ee4 100644
--- a/examples/marker/marker.html
+++ b/examples/marker/marker.html
@@ -86,21 +86,21 @@ links.forEach(function(link) {
link.target = nodes[link.target] || (nodes[link.target] = {name: link.target});
});
-var w = 960,
- h = 500;
+var width = 960,
+ height = 500;
var force = d3.layout.force()
.nodes(d3.values(nodes))
.links(links)
- .size([w, h])
+ .size([width, height])
.linkDistance(60)
.charge(-300)
.on("tick", tick)
.start();
var svg = d3.select("body").append("svg")
- .attr("width", w)
- .attr("height", h);
+ .attr("width", width)
+ .attr("height", height);
// Per-type markers, as they don't inherit styles.
svg.append("defs").selectAll("marker")