s.org/d3.v4.min.js"></script>
<script src="../venn.js"></script>
<script src="./lastfm.jsonp"></script>

<script>

var chart = venn.VennDiagram()
                 .width(500)
                 .height(500);

var div = d3.select("#venn")
div.datum(sets).call(chart);

var tooltip = d3.select("body").append("div")
    .attr("class", "venntooltip");

div.selectAll("path")
    .style("stroke-opacity", 0)
    .style("stroke", "#fff")
    .style("stroke-width", 3)

div.selectAll("g")
    .on("mouseover", function(d