D3 Drag Rectangle with drag handles

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
    <style type="text/css">
svg {
  border: solid 1px #aaa;
}

#checks {
  margin: 10px;
}
    </style>
  </head>
  <body>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/d3@2.10.3/d3.v2.js"></script>
    <script type="text/javascript" src="dragrect.js"></script>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
    <div id="checks">
    	X-axis:<input type="checkbox" id="xChecked" checked/>
    	Y-axis:<input type="checkbox" id="yChecked" checked/>
    </div>

$('#yChecked').click(function() {
    isYChecked = !isYChecked;
     dragbartop 
        .attr("fill-opacity", (isYChecked ? 0.5 : 0))
        .attr("cursor", (isYChecked ? "ns-resize" : "move"));
     dragbarbottom 
        .attr("fill-opacity", (isYChecked ? 0.5 : 0))
        .attr("cursor", (isYChecked ? "ns-resize" : "move"));
});
    </script>
  </body>
</html>

Modified http://mbostock.github.com/d3/d3.js to a secure url

https://mbostock.github.com/d3/d3.js

https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js