index.html

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
    <title>Path Test</title>
    <script type="text/javascript" src="http://d3js.org/d3.v2.js"></script>
  </head>
  <body>
    <script type="text/javascript">
var svg = d3.select("body")
  .append("svg:svg")
    .attr("viewBox", "0 0 500 300")
    .attr("version", "1.1");

svg.append("defs")
  .append("path")
    .attr("id", "s3")
    .attr("d", "M 10,90 Q 100,15 200,70 Q 340,140 400,30");

  svg.append("svg:g")
    .attr("id", "thing")
    .attr("fill", "navy")
    .append("text")
       .attr("font-size", "20")
       .append("textPath")
         .attr("xlink:href", "#s3")
         .text("Wavy text is the gimmick for many years to come (d3)");
    </script>
  </body>
</html>