     top = r.set()
     cuday = 0
     cumonth = ""
-    offsetX = 20
-    offsetY = 60
+    @offsetX = 20
+    @offsetY = 60
     barWidth = Math.max(graphWidth, @days.length * 20 + 320)
-    scrollLeft = cw
+    @scrollLeft = cw
     @raphael = r
     r.rect(0, 0, barWidth, 20).attr fill: "#222"
     r.rect(0, 20, barWidth, 20).attr fill: "#444"

    for day, mm in @days
      if cuday isnt day[0]
        # Dates
        r.text(offsetX + mm * 20, 31, day[0])
          .attr(
            font: "12px Monaco, monospace"
            fill: "#DDD"


      if cumonth isnt day[1]
        # Months
        r.text(@offsetX + mm * 20, 11, day[1])
          .attr(
            font: "12px Monaco, monospace"
            fill: "#EEE"
