Multiple movie legs

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <link href='https://fonts.googleapis.com/css?family=Cabin:300,400' rel='stylesheet' type='text/css'>
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>

.line {
  fill: none;
  stroke: Orange;
  stroke-width: 2px;
}
    .axis {
      font-family: Cabin;
      font-size: 12px;
    }
 text.shadow {
    stroke: white;
    stroke-width: 4px;
    opacity: 0.9
  }
  .grid line {
    stroke: lightgrey;
    stroke-opacity: 0.6;
    shape-rendering: crispEdges
  }
  .grid path {
    stroke-width: 0;
  }
  </style>
</head>

<body>
  <script>
  var margin = {top: 30, right: 50, bottom: 350, left: 70},
    width = 960 - margin.left - margin.right,
    height = 750 - margin.top - margin.bottom;

// parse the date / time
var parseTime = d3.timeParse("%d-%b-%y");

// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);

// define the line
var valueline = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.titanic); });
    
var valueline2 = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.avatar); });
    
var valueline3 = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.frozen); });
    
var valueline4 = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.forceawakens); });

// append the svg obgect to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform",
          "translate(" + margin.left + "," + margin.top + ")");
  function make_x_gridlines() {
    return d3.axisBottom(x)
    	.ticks(10)
  }
  function make_y_gridlines() {
    return d3.axisLeft(y)
    	.ticks(5)
  }
// Get the data
d3.tsv("oldtitava.tsv", function(error, data) {
  if (error) throw error;

// format the data
  data.forEach(function(d) {
      d.date = parseTime(d.date);
      d.titanic = +d.titanic;
    	d.avatar = +d.avatar;
    	d.frozen = +d.frozen;
    	d.forceawakens = +d.forceawakens;
  });

// Scale the range of the data
  x.domain(d3.extent(data, function(d) { return d.date; }));
  y.domain([0, d3.max(data, function(d) { return Math.max(d.titanic, d.avatar, d.frozen, d.forceawakens); })]);

svg.append("g")
  		.attr("class","grid")
  		.attr("transform","translate(0," + height + ")")
  		.style("stroke-dasharray",("3,3"))
  		.call(make_x_gridlines()
            .tickSize(-height)
            .tickFormat("")
            )

svg.append("g")
  		.attr("class","grid")
  		.style("stroke-dasharray",("3,3"))
  		.call(make_y_gridlines()
            .tickSize(-width)
  .tickFormat("")
            )
  // Add the valueline path.
  svg.append("path")
      .data([data])
      .attr("class", "line")
      .attr("d", valueline);
  
  svg.append("path")
      .data([data])
      .attr("class", "line")
  		.style("stroke","IndianRed")
      .attr("d", valueline2);
  
    svg.append("path")
      .data([data])
      .attr("class", "line")
  		.style("stroke","SteelBlue")
      .attr("d", valueline3);
  
    svg.append("path")
      .data([data])
      .attr("class", "line")
  		.style("stroke","LimeGreen")
      .attr("d", valueline4);

// Add the X Axis
  svg.append("g")
  		.attr("class","axis")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x).ticks(12).tickFormat(d3.timeFormat("%Y-%d-%b")))
  		.selectAll("text")
  			.style("text-anchor","end")
  			.attr("dx","-.8em")
  			.attr("dy",".15em")
  			.attr("transform","rotate(-45)");
  
 svg.append("text")             
      .attr("transform","translate(" + (width/2) + "," + (height + margin.top + 50) + ")")
      .style("text-anchor", "left")
 			.style("font","14px Cabin")
 			.style("font-weight","bolder")
      .text("Week");
	
  // Add the Y Axis
  svg.append("g")
  		.attr("class","axis")
      .call(d3.axisLeft(y));
  
  svg.append("text")
  		.attr("transform","rotate(-90)")
  		.attr("y",0-margin.left)
  		.attr("x",0-height/2)
  		.attr("dy","2em")
  		.attr("text-anchor","middle")
  		.style("font","14px Cabin")
      .text("Weekly percent of total domestic gross (%)");
  
  svg.append("text")
  		.attr("transform","translate(" + (width/2) + "," + (0 - margin.top/2) + ")")
  		.attr("text-anchor","middle")
  		.style("text-decoration","underline")
  		.text("Titanic weekly gross as pct of total")

svg.append("text")
  	.attr("transform", "translate(" + (10) + "," + (y(data[0].titanic)-5) + ")")
  	.attr("dy",".35em")
  	.attr('text-anchor',"start")
  	.attr("fill","Orange")
  	.style("font-family","Cabin")
   	.attr("class","shadow")
  	.text("Titanic");
  svg.append("text")
  	.attr("transform", "translate(" + (10) + "," + (y(data[0].titanic)-5) + ")")
  	.attr("dy",".35em")
  	.attr('text-anchor',"start")
  	.attr("fill","Orange")
  	.style("font-family","Cabin")
  	.text("Titanic");
  
  svg.append("text")
  	.attr("transform", "translate(" + (10) + "," + (y(data[0].avatar)-23) + ")")
  	.attr("dy",".35em")
  	.attr('text-anchor',"start")
  	.attr("fill","IndianRed")
  	.style("font-family","Cabin")
  	.text("Avatar");
  
  svg.append("text")
  	.attr("transform", "translate(" + (10) + "," + y(data[0].frozen) + ")")
  	.attr("dy",".25em")
  	.attr('text-anchor',"start")
  	.attr("fill","SteelBlue")
  	.style("font-family","Cabin")
  	.text("Frozen");

svg.append("text")
  	.attr("transform", "translate(" + (10) + "," + (y(data[0].forceawakens)+7) + ")")
  	.attr("dy",".25em")
  	.attr('text-anchor',"start")
  	.attr("fill","LimeGreen")
  	.style("font-family","Cabin")
  	.text("The Force Awakens");

});
  </script>
</body>

https://d3js.org/d3.v4.min.js