$(function () {
  var datasets = {
    usa: {
      label: "USA",
      data: [
        [1988, 483994],
        [1989, 479060],
        [1990, 457648],
        [1991, 401949],
        [1992, 424705],
        [1993, 402375],
        [1994, 377867],
        [1995, 357382],
        [1996, 337946],
        [1997, 336185],
        [1998, 328611],
        [1999, 329421],
        [2000, 342172],
        [2001, 344932],
        [2002, 387303],
        [2003, 440813],
        [2004, 480451],
        [2005, 504638],
        [2006, 528692],
      ],
    },
    russia: {
      label: "Russia",
      data: [
        [1988, 218000],
        [1989, 203000],
        [1990, 171000],
        [1992, 42500],
        [1993, 37600],
        [1994, 36600],
        [1995, 21700],
        [1996, 19200],
        [1997, 21300],
        [1998, 13600],
        [1999, 14000],
        [2000, 19100],
        [2001, 21300],
        [2002, 23600],
        [2003, 25100],
        [2004, 26100],
        [2005, 31100],
        [2006, 34700],
      ],
    },
    uk: {
      label: "UK",
      data: [
        [1988, 62982],
        [1989, 62027],
        [1990, 60696],
        [1991, 62348],
        [1992, 58560],
        [1993, 56393],
        [1994, 54579],
        [1995, 50818],
        [1996, 50554],
        [1997, 48276],
        [1998, 47691],
        [1999, 47529],
        [2000, 47778],
        [2001, 48760],
        [2002, 50949],
        [2003, 57452],
        [2004, 60234],
        [2005, 60076],
        [2006, 59213],
      ],
    },
    germany: {
      label: "Germany",
      data: [
        [1988, 55627],
        [1989, 55475],
        [1990, 58464],
        [1991, 55134],
        [1992, 52436],
        [1993, 47139],
        [1994, 43962],
        [1995, 43238],
        [1996, 42395],
        [1997, 40854],
        [1998, 40993],
        [1999, 41822],
        [2000, 41147],
        [2001, 40474],
        [2002, 40604],
        [2003, 40044],
        [2004, 38816],
        [2005, 38060],
        [2006, 36984],
      ],
    },
    denmark: {
      label: "Denmark",
      data: [
        [1988, 3813],
        [1989, 3719],
        [1990, 3722],
        [1991, 3789],
        [1992, 3720],
        [1993, 3730],
        [1994, 3636],
        [1995, 3598],
        [1996, 3610],
        [1997, 3655],
        [1998, 3695],
        [1999, 3673],
        [2000, 3553],
        [2001, 3774],
        [2002, 3728],
        [2003, 3618],
        [2004, 3638],
        [2005, 3467],
        [2006, 3770],
      ],
    },
    sweden: {
      label: "Sweden",
      data: [
        [1988, 6402],
        [1989, 6474],
        [1990, 6605],
        [1991, 6209],
        [1992, 6035],
        [1993, 6020],
        [1994, 6000],
        [1995, 6018],
        [1996, 3958],
        [1997, 5780],
        [1998, 5954],
        [1999, 6178],
        [2000, 6411],
        [2001, 5993],
        [2002, 5833],
        [2003, 5791],
        [2004, 5450],
        [2005, 5521],
        [2006, 5271],
      ],
    },
    norway: {
      label: "Norway",
      data: [
        [1988, 4382],
        [1989, 4498],
        [1990, 4535],
        [1991, 4398],
        [1992, 4766],
        [1993, 4441],
        [1994, 4670],
        [1995, 4217],
        [1996, 4275],
        [1997, 4203],
        [1998, 4482],
        [1999, 4506],
        [2000, 4358],
        [2001, 4385],
        [2002, 5269],
        [2003, 5066],
        [2004, 5194],
        [2005, 4887],
        [2006, 4891],
      ],
    },
  };
  /* var dataSet = [
    {label: "USA", color: "#005CDE" },
    {label: "Russia", color: "#005CDE" },
    { label: "UK", color: "#00A36A" },
    { label: "Germany", color: "#7D0096" },
    { label: "Denmark", color: "#992B00" },
    { label: "Sweden", color: "#DE000F" },
    { label: "Norway", color: "#ED7B00" }    
];*/
  // hard-code color indices to prevent them from shifting as
  // countries are turned on/off
  var i = 0;
  $.each(datasets, function (key, val) {
    val.color = i;
    ++i;
  });

  // insert checkboxes
  var choiceContainer = $("#choices");
  $.each(datasets, function (key, val) {
    choiceContainer.append(
      '<input type="checkbox" name="' +
        key +
        '" checked="checked" id="id' +
        key +
        '">' +
        '<label for="id' +
        key +
        '">' +
        val.label +
        "</label>"
    );
  });
  choiceContainer.find("input").click(plotAccordingToChoices);

  function plotAccordingToChoices() {
    var data = [];

    choiceContainer.find("input:checked").each(function () {
      var key = $(this).attr("name");
      if (key && datasets[key]) data.push(datasets[key]);
    });

    if (data.length > 0)
      $.plot($("#placeholder"), data, {
        yaxis: { min: 0 },
        xaxis: { tickDecimals: 0 },
      });
  }

  plotAccordingToChoices();
});