diff --git a/example.html b/example.html
index e4d4ad1..01ae360 100644
--- a/example.html
+++ b/example.html
@@ -45,7 +45,7 @@
       {"period": "1995 Q4", "licensed": 1702, "sorned": 0},
       {"period": "1994 Q4", "licensed": 1732, "sorned": 0}
     ];
-    $('#graph').hml({
+    new Morris.Line("graph", {
       data: tax_data,
       xkey: 'period',
       ykeys: ['licensed', 'sorned'],
@@ -53,4 +53,4 @@
     });
   })
   </script>
-</body>
\ No newline at end of file
+</body>
diff --git a/morris.coffee b/morris.coffee
new file mode 100644
index 0000000..42c323a
--- /dev/null
+++ b/morris.coffee
@@ -0,0 +1,192 @@
+# The original line graph.
+#
+window.Morris = {}
+class window.Morris.Line
+
+  # Initialise the graph.
+  #
+  # @param {string} id Target element's DOM ID
+  # @param {Object} options
+  constructor: (id, options) ->
+    @el = $ document.getElementById(id)
+    @options = $.extend @defaults, options
+    # bail if there's no data
+    if @options.data is undefined or @options.data.length is 0
+      return
+    @el.addClass 'graph-initialised'
+    @precalc()
+    @redraw()
+
+  # Default configuration
+  #
+  defaults:
+    lineWidth: 3
+    pointSize: 4
+    lineColors: [
+      '#0b62a4'
+      '#7A92A3'
+      '#4da74d'
+      '#afd8f8'
+      '#edc240'
+      '#cb4b4b'
+      '#9440ed'
+    ]
+    marginTop: 25
+    marginRight: 25
+    marginBottom: 30
+    marginLeft: 25
+    numLines: 5
+    gridLineColor: '#aaa'
+    gridTextColor: '#888'
+    gridTextSize: 12
+    gridStrokeWidth: 0.5
+
+  # Do any necessary pre-processing for a new dataset
+  #
+  precalc: ->
+    # extract labels
+    @xlabels = $.map @options.data, (d) => d[@options.xkey]
+    @ylabels = @options.labels
+
+    # extract series data
+    @series = []
+    for ykey in @options.ykeys
+      @series.push $.map @options.data, (d) -> d[ykey]
+
+    # translate x labels into nominal dates
+    # note: currently using decimal years to specify dates
+    @xvals = $.map @xlabels, (x) => @parseYear x
+    @xmin = Math.min.apply null, @xvals
+    @xmax = Math.max.apply null, @xvals
+    if @xmin is @xmax
+      @xmin -= 1
+      @xmax += 1
+
+    # use $.map to flatten arrays and find the max y value
+    all_y_vals = $.map @series, (x) -> Math.max.apply null, x
+    @ymax = Math.max(20, Math.max.apply(null, all_y_vals))
+
+  # Clear and redraw the graph
+  #
+  redraw: ->
+    # remove child elements (get rid of old drawings)
+    @el.empty()
+
+    # the raphael drawing instance
+    @r = new Raphael(@el[0])
+
+    # calculate grid dimensions
+    left = @measureText(@ymax, @options.gridTextSize).width + @options.marginLeft
+    width = @el.width() - left - @options.marginRight
+    height = @el.height() - @options.marginTop - @options.marginBottom
+    dx = width / (@xmax - @xmin)
+    dy = height / @ymax
+
+    # quick translation helpers
+    transX = (x) =>
+      if @xvals.length is 1
+        left + width / 2
+      else
+       left + (x - @xmin) * dx
+    transY = (y) =>
+      return @options.marginTop + height - y * dy
+
+    # draw y axis labels, horizontal lines
+    lineInterval = height / (@options.numLines - 1)
+    for i in [0..@options.numLines-1]
+      y = @options.marginTop + i * lineInterval
+      v = Math.round((@options.numLines - 1 - i) * @ymax / (@options.numLines - 1))
+      @r.text(left - @options.marginLeft/2, y, v)
+        .attr('font-size', @options.gridTextSize)
+        .attr('fill', @options.gridTextColor)
+        .attr('text-anchor', 'end')
+      @r.path("M" + left + "," + y + 'H' + (left + width))
+        .attr('stroke', @options.gridLineColor)
+        .attr('stroke-width', @options.gridStrokeWidth)
+
+    # draw x axis labels
+    prevLabelMargin = null
+    xLabelMargin = 50 # make this an option?
+    for i in [Math.ceil(@xmin)..Math.floor(@xmax)]
+      label = @r.text(transX(i), @options.marginTop + height + @options.marginBottom / 2, i)
+        .attr('font-size', @options.gridTextSize)
+        .attr('fill', @options.gridTextColor)
+      labelBox = label.getBBox()
+      # ensure a minimum of `xLabelMargin` pixels between labels
+      if prevLabelMargin is null or prevLabelMargin <= labelBox.x
+        prevLabelMargin = labelBox.x + labelBox.width + xLabelMargin
+      else
+        label.remove()
+
+    # draw the actual series
+    columns = (transX(x) for x in @xvals)
+    seriesCoords = []
+    for s in @series
+      seriesCoords.push($.map(s, (y, i) -> x: columns[i], y: transY(y)))
+    for i in [seriesCoords.length-1..0]
+      coords = seriesCoords[i]
+      if coords.length > 1
+        path = @createPath coords, @options.marginTop, left, @options.marginTop + height, left + width
+        @r.path(path)
+          .attr('stroke', @options.lineColors[i])
+          .attr('stroke-width', @options.lineWidth)
+    seriesPoints = ([] for i in [0..seriesCoords.length-1])
+    for i in [seriesCoords.length-1..0]
+      for c in seriesCoords[i]
+        circle = @r.circle(c.x, c.y, @options.pointSize)
+          .attr('fill', @options.lineColors[i])
+          .attr('stroke-width', 1)
+          .attr('stroke', '#ffffff')
+        seriesPoints[i].push(circle)
+
+    # hover labels
+    hoverMargins = $.map columns.slice(1), (x, i) -> (x + columns[i]) / 2
+
+  # create a path for a data series
+  #
+  createPath: (coords, top, left, bottom, right) ->
+    path = ""
+    grads = @gradients coords
+    for i in [0..coords.length-1]
+      c = coords[i]
+      if i is 0
+        path += "M#{c.x},#{c.y}"
+      else
+        g = grads[i]
+        lc = coords[i - 1]
+        lg = grads[i - 1]
+        ix = (c.x - lc.x) / 4
+        x1 = lc.x + ix
+        y1 = Math.min(bottom, lc.y + ix * lg)
+        x2 = c.x - ix
+        y2 = Math.min(bottom, c.y - ix * g)
+        path += "C#{x1},#{y1},#{x2},#{y2},#{c.x},#{c.y}"
+    return path
+
+  # calculate a gradient at each point for a series of points
+  #
+  gradients: (coords) ->
+    $.map coords, (c, i) ->
+      if i is 0
+        (coords[1].y - c.y) / (coords[1].x - c.x)
+      else if i is (coords.length - 1)
+        (c.y - coords[i - 1].y) / (c.x - coords[i - 1].x)
+      else
+        (coords[i + 1].y - coords[i - 1].y) / (coords[i + 1].x - coords[i - 1].x)
+
+  measureText: (text, fontSize = 12) ->
+    tt = @r.text(100, 100, text).attr('font-size', fontSize)
+    ret = tt.getBBox()
+    tt.remove()
+    return ret
+
+  parseYear: (year) ->
+    m = year.toString().match /(\d+) Q(\d)/
+    n = year.toString().match /(\d+)\-(\d+)/
+    if m
+      parseInt(m[1], 10) + (parseInt(m[2], 10) * 3 - 1) / 12
+    else if n
+      parseInt(n[1], 10) + (parseInt(n[2], 10) - 1) / 12
+    else
+      parseInt(year, 10)
+
diff --git a/morris.js b/morris.js
index 3e5f81e..b35f6a7 100644
--- a/morris.js
+++ b/morris.js
@@ -1,293 +1,209 @@
+(function() {
 
-/*global jQuery: false, Raphael: false */
+  window.Morris = {};
 
-function parse_year(year) {
-  var m = year.toString().match(/(\d+) Q(\d)/);
-  var n = year.toString().match(/(\d+)\-(\d+)/);
-  if (m) {
-    return parseInt(m[1], 10) + (parseInt(m[2], 10) * 3 - 1) / 12;
-  }
-  else if (n) {
-    return parseInt(n[1], 10) + (parseInt(n[2], 10) - 1) / 12;
-  }
-  else {
-    return parseInt(year, 10);
-  }
-}
+  window.Morris.Line = (function() {
 
-function setup_graph(config) {
-  /*jshint loopfunc: true */
-  var data = config.data;
-  if (data.length === 0) {
-    return;
-  }
-  this.addClass('graph-initialised');
-  var xlabels = $.map(data, function (d) { return d[config.xkey]; });
-  var series = config.ykeys;
-  var labels = config.labels;
-  if (!data || !data.length) {
-    return;
-  }
-  for (var i = 0; i < series.length; i++) {
-    series[i] = $.map(data, function (d) { return d[series[i]]; });
-  }
-  var xvals = $.map(xlabels, function (x) { return parse_year(x); });
-
-  var xmin = Math.min.apply(null, xvals);
-  var xmax = Math.max.apply(null, xvals);
-  if (xmin === xmax) {
-    xmin -= 1;
-    xmax += 1;
-  }
-  var ymax = Math.max(20, Math.max.apply(null,
-    $.map(series, function (s) { return Math.max.apply(null, s); })));
-  var r = new Raphael(this[0]);
-  var margin_top = 25, margin_bottom = 30, margin_right = 25;
-  var tt = r.text(100, 100, ymax).attr('font-size', 12);
-  var margin_left = 25 + tt.getBBox().width;
-  tt.remove();
-  var h = this.height() - margin_top - margin_bottom;
-  var w = this.width() - margin_left - margin_right;
-  var dx = w / (xmax - xmin);
-  var dy = h / ymax;
-
-  function trans_x(x) {
-    if (xvals.length === 1) {
-      return margin_left + w / 2;
+    function Line(id, options) {
+      this.el = $(document.getElementById(id));
+      this.options = $.extend(this.defaults, options);
+      if (this.options.data === void 0 || this.options.data.length === 0) return;
+      this.el.addClass('graph-initialised');
+      this.precalc();
+      this.redraw();
     }
-    else {
-      return margin_left + (x - xmin) * dx;
-    }
-  }
-  function trans_y(y) {
-    return margin_top + h - y * dy;
-  }
-    
-  // draw horizontal lines
-  var num_lines = 5;
-  var line_interval = h / (num_lines - 1);
-  for (i = 0; i < num_lines; i++) {
-    var y = margin_top + i * line_interval;
-    r.text(margin_left - 12, y, Math.floor((num_lines - 1 - i) * ymax / (num_lines - 1)))
-      .attr('font-size', 12)
-      .attr('fill', '#888')
-      .attr('text-anchor', 'end');
-    r.path("M" + (margin_left) + "," + y + "L" + (margin_left + w) + "," + y)
-      .attr('stroke', '#aaa')
-      .attr('stroke-width', 0.5);
-  }
 
-  // calculate the columns
-  var cols = $.map(xvals, trans_x);
-  var hover_margins = $.map(cols.slice(1),
-      function (x, i) { return (x + cols[i]) / 2; });
+    Line.prototype.defaults = {
+      lineWidth: 3,
+      pointSize: 4,
+      lineColors: ['#0b62a4', '#7A92A3', '#4da74d', '#afd8f8', '#edc240', '#cb4b4b', '#9440ed'],
+      marginTop: 25,
+      marginRight: 25,
+      marginBottom: 30,
+      marginLeft: 25,
+      numLines: 5,
+      gridLineColor: '#aaa',
+      gridTextColor: '#888',
+      gridTextSize: 12,
+      gridStrokeWidth: 0.5
+    };
 
-  var last_label = null;
-  var ylabel_margin = 50;
-  for (i = Math.ceil(xmin); i <= Math.floor(xmax); i++) {
-    var label = r.text(trans_x(i), margin_top + h + margin_bottom / 2, i)
-        .attr('font-size', 12)
-        .attr('fill', '#888');
-    if (last_label !== null) {
-      var bb1 = last_label.getBBox();
-      var bb2 = label.getBBox();
-      if (bb1.x + bb1.width + ylabel_margin > bb2.x) {
-        label.remove();
+    Line.prototype.precalc = function() {
+      var all_y_vals, ykey, _i, _len, _ref,
+        _this = this;
+      this.xlabels = $.map(this.options.data, function(d) {
+        return d[_this.options.xkey];
+      });
+      this.ylabels = this.options.labels;
+      this.series = [];
+      _ref = this.options.ykeys;
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        ykey = _ref[_i];
+        this.series.push($.map(this.options.data, function(d) {
+          return d[ykey];
+        }));
       }
-      else {
-        last_label = label;
+      this.xvals = $.map(this.xlabels, function(x) {
+        return _this.parseYear(x);
+      });
+      this.xmin = Math.min.apply(null, this.xvals);
+      this.xmax = Math.max.apply(null, this.xvals);
+      if (this.xmin === this.xmax) {
+        this.xmin -= 1;
+        this.xmax += 1;
       }
-    }
-    else {
-      last_label = label;
-    }
-  }
+      all_y_vals = $.map(this.series, function(x) {
+        return Math.max.apply(null, x);
+      });
+      return this.ymax = Math.max(20, Math.max.apply(null, all_y_vals));
+    };
 
-  // draw the series
-  var series_points = [];
-  for (var s = (series.length - 1); s >= 0; s--) {
-    var path = '';
-    var lc = null;
-    var lg = null;
-    // translate the coordinates into screen positions
-    var coords = $.map(series[s],
-      function (v, idx) { return {x: cols[idx], y: trans_y(v)}; });
-    if (coords.length > 1) {
-      // calculate the gradients
-      var grads = $.map(coords, function (c, i) {
+    Line.prototype.redraw = function() {
+      var c, circle, columns, coords, dx, dy, height, hoverMargins, i, label, labelBox, left, lineInterval, path, prevLabelMargin, s, seriesCoords, seriesPoints, transX, transY, v, width, x, xLabelMargin, y, _i, _j, _len, _len2, _ref, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7,
+        _this = this;
+      this.el.empty();
+      this.r = new Raphael(this.el[0]);
+      left = this.measureText(this.ymax, this.options.gridTextSize).width + this.options.marginLeft;
+      width = this.el.width() - left - this.options.marginRight;
+      height = this.el.height() - this.options.marginTop - this.options.marginBottom;
+      dx = width / (this.xmax - this.xmin);
+      dy = height / this.ymax;
+      transX = function(x) {
+        if (_this.xvals.length === 1) {
+          return left + width / 2;
+        } else {
+          return left + (x - _this.xmin) * dx;
+        }
+      };
+      transY = function(y) {
+        return _this.options.marginTop + height - y * dy;
+      };
+      lineInterval = height / (this.options.numLines - 1);
+      for (i = 0, _ref = this.options.numLines - 1; 0 <= _ref ? i <= _ref : i >= _ref; 0 <= _ref ? i++ : i--) {
+        y = this.options.marginTop + i * lineInterval;
+        v = Math.round((this.options.numLines - 1 - i) * this.ymax / (this.options.numLines - 1));
+        this.r.text(left - this.options.marginLeft / 2, y, v).attr('font-size', this.options.gridTextSize).attr('fill', this.options.gridTextColor).attr('text-anchor', 'end');
+        this.r.path("M" + left + "," + y + 'H' + (left + width)).attr('stroke', this.options.gridLineColor).attr('stroke-width', this.options.gridStrokeWidth);
+      }
+      prevLabelMargin = null;
+      xLabelMargin = 50;
+      for (i = _ref2 = Math.ceil(this.xmin), _ref3 = Math.floor(this.xmax); _ref2 <= _ref3 ? i <= _ref3 : i >= _ref3; _ref2 <= _ref3 ? i++ : i--) {
+        label = this.r.text(transX(i), this.options.marginTop + height + this.options.marginBottom / 2, i).attr('font-size', this.options.gridTextSize).attr('fill', this.options.gridTextColor);
+        labelBox = label.getBBox();
+        if (prevLabelMargin === null || prevLabelMargin <= labelBox.x) {
+          prevLabelMargin = labelBox.x + labelBox.width + xLabelMargin;
+        } else {
+          label.remove();
+        }
+      }
+      columns = (function() {
+        var _i, _len, _ref4, _results;
+        _ref4 = this.xvals;
+        _results = [];
+        for (_i = 0, _len = _ref4.length; _i < _len; _i++) {
+          x = _ref4[_i];
+          _results.push(transX(x));
+        }
+        return _results;
+      }).call(this);
+      seriesCoords = [];
+      _ref4 = this.series;
+      for (_i = 0, _len = _ref4.length; _i < _len; _i++) {
+        s = _ref4[_i];
+        seriesCoords.push($.map(s, function(y, i) {
+          return {
+            x: columns[i],
+            y: transY(y)
+          };
+        }));
+      }
+      for (i = _ref5 = seriesCoords.length - 1; _ref5 <= 0 ? i <= 0 : i >= 0; _ref5 <= 0 ? i++ : i--) {
+        coords = seriesCoords[i];
+        if (coords.length > 1) {
+          path = this.createPath(coords, this.options.marginTop, left, this.options.marginTop + height, left + width);
+          this.r.path(path).attr('stroke', this.options.lineColors[i]).attr('stroke-width', this.options.lineWidth);
+        }
+      }
+      seriesPoints = (function() {
+        var _ref6, _results;
+        _results = [];
+        for (i = 0, _ref6 = seriesCoords.length - 1; 0 <= _ref6 ? i <= _ref6 : i >= _ref6; 0 <= _ref6 ? i++ : i--) {
+          _results.push([]);
+        }
+        return _results;
+      })();
+      for (i = _ref6 = seriesCoords.length - 1; _ref6 <= 0 ? i <= 0 : i >= 0; _ref6 <= 0 ? i++ : i--) {
+        _ref7 = seriesCoords[i];
+        for (_j = 0, _len2 = _ref7.length; _j < _len2; _j++) {
+          c = _ref7[_j];
+          circle = this.r.circle(c.x, c.y, this.options.pointSize).attr('fill', this.options.lineColors[i]).attr('stroke-width', 1).attr('stroke', '#ffffff');
+          seriesPoints[i].push(circle);
+        }
+      }
+      return hoverMargins = $.map(columns.slice(1), function(x, i) {
+        return (x + columns[i]) / 2;
+      });
+    };
+
+    Line.prototype.createPath = function(coords, top, left, bottom, right) {
+      var c, g, grads, i, ix, lc, lg, path, x1, x2, y1, y2, _ref;
+      path = "";
+      grads = this.gradients(coords);
+      for (i = 0, _ref = coords.length - 1; 0 <= _ref ? i <= _ref : i >= _ref; 0 <= _ref ? i++ : i--) {
+        c = coords[i];
+        if (i === 0) {
+          path += "M" + c.x + "," + c.y;
+        } else {
+          g = grads[i];
+          lc = coords[i - 1];
+          lg = grads[i - 1];
+          ix = (c.x - lc.x) / 4;
+          x1 = lc.x + ix;
+          y1 = Math.min(bottom, lc.y + ix * lg);
+          x2 = c.x - ix;
+          y2 = Math.min(bottom, c.y - ix * g);
+          path += "C" + x1 + "," + y1 + "," + x2 + "," + y2 + "," + c.x + "," + c.y;
+        }
+      }
+      return path;
+    };
+
+    Line.prototype.gradients = function(coords) {
+      return $.map(coords, function(c, i) {
         if (i === 0) {
           return (coords[1].y - c.y) / (coords[1].x - c.x);
-        }
-        else if (i === xvals.length - 1) {
+        } else if (i === (coords.length - 1)) {
           return (c.y - coords[i - 1].y) / (c.x - coords[i - 1].x);
-        }
-        else {
+        } else {
           return (coords[i + 1].y - coords[i - 1].y) / (coords[i + 1].x - coords[i - 1].x);
         }
       });
-      for (i = 0; i < coords.length; i++) {
-        var c = coords[i];
-        var g = grads[i];
-        if (i === 0) {
-          path += "M" + ([c.x, c.y].join(','));
-        }
-        else {
-          var ix = (c.x - lc.x) / 4;
-          path += "C" + ([lc.x + ix,
-                          Math.min(margin_top + h, lc.y + ix * lg),
-                          c.x - ix,
-                          Math.min(margin_top + h, c.y - ix * g),
-                          c.x, c.y].join(','));
-        }
-        lc = c;
-        lg = g;
-      }
-      r.path(path)
-        .attr('stroke', config.line_colors[s])
-        .attr('stroke-width', config.line_width);
-      // draw the points
-    }
-    series_points.push([]);
-    for (i = 0; i < series[s].length; i++) {
-      var c1 = {x: cols[i], y: trans_y(series[s][i])};
-      var circle = r.circle(c1.x, c1.y, config.point_size)
-        .attr('fill', config.line_colors[s])
-        .attr('stroke-width', 1)
-        .attr('stroke', '#ffffff');
-      series_points[series_points.length - 1].push(circle);
-    }
-  }
-    
-  // hover labels
-  var label_height = 12;
-  var label_padding_x = 10;
-  var label_padding_y = 5;
-  var label_margin = 10;
-  var yvar_labels = [];
-  var label_float_height = (label_height * 1.5) * (series.length + 1);
-  var label_float = r.rect(-10, -label_float_height / 2 - label_padding_y, 20, label_float_height + label_padding_y * 2, 10)
-        .attr('fill', '#fff')
-        .attr('stroke', '#ccc')
-        .attr('stroke-width', 2)
-        .attr('opacity', 0.95);
-  var xvar_label = r.text(0, (label_height * 0.75) - (label_float_height / 2), '')
-    .attr('fill', '#444')
-    .attr('font-weight', 'bold')
-    .attr('font-size', label_height);
-  var label_set = r.set();
-  label_set.push(label_float);
-  label_set.push(xvar_label);
-  for (i = 0; i < series.length; i++) {
-    var yl = r.text(0, (label_height * 1.5 * (i + 1.5)) - (label_float_height / 2), '')
-      .attr('fill', config.line_colors[i])
-      .attr('font-size', label_height);
-    yvar_labels.push(yl);
-    label_set.push(yl);
-  }
-  function commas(v) {
-    v = v.toString();
-    var r = "";
-    while (v.length > 3) {
-      r = "," + v.substr(v.length - 3) + r;
-      v = v.substr(0, v.length - 3);
-    }
-    r = v + r;
-    return r;
-  }
-  function update_float(index) {
-    label_set.show();
-    xvar_label.attr('text', xlabels[index]);
-    for (var i = 0; i < series.length; i++) {
-      yvar_labels[i].attr('text', labels[i] + ': ' + commas(series[i][index]));
-    }
-    // calculate bbox width
-    var bbw = Math.max(xvar_label.getBBox().width,
-      Math.max.apply(null, $.map(yvar_labels, function (l) { return l.getBBox().width; })));
-    label_float.attr('width', bbw + label_padding_x * 2);
-    label_float.attr('x', -label_padding_x - bbw / 2);
-    // determine y-pos
-    var yloc = Math.min.apply(null, $.map(series, function (s) { return trans_y(s[index]); }));
-    if (yloc > label_float_height + label_padding_y * 2 + label_margin + margin_top) {
-      yloc = yloc - label_float_height / 2 - label_padding_y - label_margin;
-    }
-    else {
-      yloc = yloc + label_float_height / 2 + label_padding_y + label_margin;
-    }
-    yloc = Math.max(margin_top + label_float_height / 2 + label_padding_y, yloc);
-    yloc = Math.min(margin_top + h - label_float_height / 2 - label_padding_y, yloc);
-    var xloc = Math.min(margin_left + w - bbw / 2 - label_padding_y, cols[index]);
-    xloc = Math.max(margin_left + bbw / 2 + label_padding_x, xloc);
-    label_set.attr('transform', 't' + xloc + ',' + yloc);
-  }
-  function hide_float() {
-    label_set.hide();
-  }
-    
-  // column hilighting
-  var self = this;
-  var prev_hilight = null;
-  var point_grow = Raphael.animation({r: config.point_size + 3}, 25, "linear");
-  var point_shrink = Raphael.animation({r: config.point_size}, 25, "linear");
-  function highlight(index) {
-    var j;
-    if (prev_hilight !== null && prev_hilight !== index) {
-      for (j = 0; j < series_points.length; j++) {
-        series_points[j][prev_hilight].animate(point_shrink);
-      }
-    }
-    if (index !== null && prev_hilight !== index) {
-      for (j = 0; j < series_points.length; j++) {
-        series_points[j][index].animate(point_grow);
-      }
-      update_float(index);
-    }
-    prev_hilight = index;
-    if (index === null) {
-      hide_float();
-    }
-  }
-  function update_hilight(x_coord) {
-    var x = x_coord - self.offset().left;
-    for (var i = hover_margins.length; i > 0; i--) {
-      if (hover_margins[i - 1] > x) {
-        break;
-      }
-    }
-    highlight(i);
-  }
-  this.mousemove(function (evt) {
-    update_hilight(evt.pageX);
-  });
-  function touchhandler(evt) {
-    var touch = evt.originalEvent.touches[0] ||
-                evt.originalEvent.changedTouches[0];
-    update_hilight(touch.pageX);
-    return touch;
-  }
-  this.bind('touchstart', touchhandler);
-  this.bind('touchmove', touchhandler);
-  this.bind('touchend', touchhandler);
-  highlight(0);
-}
+    };
 
-$.fn.hml = function (options) {
-  var config = {
-    line_width: 3,
-    point_size: 4,
-    line_colors: [
-      '#0b62a4',
-      '#7A92A3',
-      '#4da74d',
-      '#afd8f8',
-      '#edc240',
-      '#cb4b4b',
-      '#9440ed'
-    ]
-  };
-  if (options) {
-    $.extend(config, options);
-  }
-  return this.each(function () {
-    setup_graph.call($(this), config);
-  });
-};
+    Line.prototype.measureText = function(text, fontSize) {
+      var ret, tt;
+      if (fontSize == null) fontSize = 12;
+      tt = this.r.text(100, 100, text).attr('font-size', fontSize);
+      ret = tt.getBBox();
+      tt.remove();
+      return ret;
+    };
+
+    Line.prototype.parseYear = function(year) {
+      var m, n;
+      m = year.toString().match(/(\d+) Q(\d)/);
+      n = year.toString().match(/(\d+)\-(\d+)/);
+      if (m) {
+        return parseInt(m[1], 10) + (parseInt(m[2], 10) * 3 - 1) / 12;
+      } else if (n) {
+        return parseInt(n[1], 10) + (parseInt(n[2], 10) - 1) / 12;
+      } else {
+        return parseInt(year, 10);
+      }
+    };
+
+    return Line;
+
+  })();
+
+}).call(this);