diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/force.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/force.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,49 @@
+var w = 960,
+    h = 500,
+    fill = d3.scale.category20();
+
+var vis = d3.select("#chart").append("svg")
+    .attr("width", w)
+    .attr("height", h);
+
+var json = miserables;
+  var force = d3.layout.force()
+      .charge(-120)
+      .linkDistance(30)
+      .nodes(json.nodes)
+      .links(json.links)
+      .size([w, h])
+      .start();
+
+  var link = vis.selectAll("line.link")
+      .data(json.links)
+    .enter().append("line")
+      .attr("class", "link")
+      .style("stroke-width", function(d) { return Math.sqrt(d.value); })
+      .attr("x1", function(d) { return d.source.x; })
+      .attr("y1", function(d) { return d.source.y; })
+      .attr("x2", function(d) { return d.target.x; })
+      .attr("y2", function(d) { return d.target.y; });
+
+  var node = vis.selectAll("circle.node")
+      .data(json.nodes)
+    .enter().append("circle")
+      .attr("class", "node")
+      .attr("cx", function(d) { return d.x; })
+      .attr("cy", function(d) { return d.y; })
+      .attr("r", 5)
+      .style("fill", function(d) { return fill(d.group); })
+      .call(force.drag);
+
+  node.append("title")
+      .text(function(d) { return d.name; });
+
+  force.on("tick", function() {
+    link.attr("x1", function(d) { return d.source.x; })
+        .attr("y1", function(d) { return d.source.y; })
+        .attr("x2", function(d) { return d.target.x; })
+        .attr("y2", function(d) { return d.target.y; });
+
+    node.attr("cx", function(d) { return d.x; })
+        .attr("cy", function(d) { return d.y; });
+  });