d3.js bubbles with zoom & dblclick to select one

<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
  <title>Bubble Chart</title>
  <link type="text/css" rel="stylesheet" href="bubble.css"/>
  <style type="text/css">body{margin:0;font: 10px sans-serif;}</style>
</head>
<body>
  <div id="chart"></div>
  <script src="https://code.jquery.com/jquery-latest.min.js"></script>
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <script type="text/javascript" >

var r = $(window).width() - 99,
  h = $(window).height() - 99,
  format = d3.format(",d"),
  fill = d3.scale.category20c();

var bubble = d3.layout.pack().sort(null).size([r,h]);

var vis = d3.select("#chart").append("svg").attr("class", "bubble")
  .call(d3.behavior.zoom().on("zoom", redraw))
  .append("g").attr("class", "group2");

d3.json("cantGetRidOfThis", function() {
    var node = vis.selectAll("g.node")
    .data(bubble.nodes(flat).filter(function(d) {return !d.children;}))
    .enter().append("g")
    .attr("class", "node")
    .attr("transform", function(d) {return "translate(" + d.x + "," + d.y + ")";});

node.append("title").text(function(d) {return d.className + ": " + format(d.value);});

node.append("circle")
    .attr("r", function(d) {return d.r;})
    .attr("class", "nodecircle")
    .style("fill", '#ff4719')
    .attr("data-classname", function(d) {return d.className;});

node.append("text")
    .attr("text-anchor", "middle")
    .attr("class", "nodetext")
    .attr("data-classname", function(d) {return d.className;})
    .attr("style", function(d) {return "font-size:" + d.r/5;})
    .attr("data-classname", function(d) {return d.className;})
    .each(function(d, i) {
      var nm = d.className;
      var arr = nm.replace(/[\\/,-]/g, " ").replace(/\s+/g, " ").split(" "),arrlength = (arr.length > 7) ? 8 : arr.length;
      d3.select(this).attr('y',"-" + (arrlength/2) + "em");
      //if text is over 7 words then ellipse the 8th
      for(var n = 0; n < arrlength; n++) {
        var tsp = d3.select(this).append('tspan').attr("x", "0").attr("dy", "1em").attr("data-classname", nm);
        if(n === 7) {
          tsp.text("...");
        } else {
          tsp.text(arr[n]);
        }
      }
    });
  });

var flat = {"children":[{"className":"Brokerage","value":87232},{"className":"Corporate Solutions","value":17645},{"className":"Capital Markets","value":6385},{"className":"Project & Development Services - Building Surveying","value":6189},{"className":"Markets - Agency Leasing","value":4758},{"className":"Project & Development Services - Project Management - Variable","value":3145},{"className":"Professional & Advisory - Regional Lease Advisory","value":2984},{"className":"Professional & Advisory - Valuation Advisory","value":2949},{"className":"Markets - Property Management","value":2941},{"className":"Advisory - Valuations","value":2409},{"className":"Project & Development Services - Project Management - Development","value":2319},{"className":"Leasing - Retail Agency","value":2187},{"className":"Office Agency - National Office Agency","value":2073},{"className":"Retail","value":2029},{"className":"Professional & Advisory - Valuation","value":1854},{"className":"Corporate Solutions - Integrated Facilities Management","value":1830},{"className":"Professional & Advisory - Building Surveying","value":1807},{"className":"Professional & Advisory - Planning","value":1795},{"className":"Hotels - Hotels","value":1728},{"className":"Markets - Tenant Representation","value":1593},{"className":"Retail - National Retail Agency","value":1505},{"className":"Industrial & Logistics - Industrial & Logistics Agency","value":1393},{"className":"Markets - Corporate","value":1293},{"className":"Corporate Solutions - Transaction Management","value":1276},{"className":"Property & Asset Management - PAM Portfolios London","value":1205},{"className":"Professional & Advisory - Rating","value":1131},{"className":"Leasing - Office Agency","value":1128},{"className":"Capital Markets - Investment Sales","value":1033},{"className":"Canada","value":1005},{"className":"Capital Markets - National Investment","value":940},{"className":"Corporate Solutions - Project & Development Services","value":929},{"className":"Agency- Office","value":827},{"className":"Retail - Leasing","value":795},{"className":"Management Services - Project & Development Services","value":745},{"className":"Professional & Advisory - Lease Advisory","value":706},{"className":"International Desk - Transactions","value":706},{"className":"Corporate Solutions - Tenant Representation","value":698},{"className":"Project & Development Services","value":698},{"className":"Retail - Management","value":680},{"className":"Residential - Affordable Housing","value":671},{"className":"Residential - Residential Sales","value":634},{"className":"Professional & Advisory - Strategic Consulting","value":618},{"className":"Corporate Solutions - Lease Administration","value":614},{"className":"Agency - Retail","value":601},{"className":"Professional & Advisory - Valuations","value":596},{"className":"Management Services - Property Management","value":569},{"className":"Project & Development Services - Project Management","value":557},{"className":"Strategic Consulting - Workplace Strategy","value":540},{"className":"Office Agency - Business Space Agency","value":540},{"className":"Capital Markets - Real Estate Investment Banking (REIB)","value":528}]};
</script>
</body>
</html>

Modified http://code.jquery.com/jquery-latest.min.js to a secure url

Modified http://d3js.org/d3.v3.min.js to a secure url

https://code.jquery.com/jquery-latest.min.js

https://d3js.org/d3.v3.min.js