COOL STUFF!!!! DON"T STEEL THIS!

gistfile1.txt

var linesVisualization;

function drawVisualization() {
  // Create and populate the data table.
  var data = google.visualization.arrayToDataTable([
    ['x', 'Cats', 'Blanket 1', 'Blanket 2'],
    ['A',   1,       1,           0.5],
    ['B',   2,       0.5,         1],
    ['C',   4,       1,           0.5],
    ['D',   8,       0.5,         1],
    ['E',   7,       1,           0.5],
    ['F',   7,       0.5,         1],
    ['G',   8,       1,           0.5],
    ['H',   4,       0.5,         1],
    ['I',   2,       1,           0.5],
    ['J',   3.5,     0.5,         1],
    ['K',   3,       1,           0.5],
    ['L',   3.5,     0.5,         1],
    ['M',   1,       1,           0.5],
    ['N',   1,       0.5,         1]
  ]);

  // Create and draw the visualization.
  linesVisualization = new google.visualization.LineChart(document.getElementById('visualization'))
  linesVisualization.draw(data, {curveType: "function",
                  width: 500, height: 400,
                  vAxis: {maxValue: 10},
                  pointSize: 3}
          );
          google.visualization.events.addListener(linesVisualization, 'onmouseover', lineMouseOver);
          google.visualization.events.addListener(linesVisualization, 'onmouseout', lineMouseOut);
}

function lineMouseOver(e) {
    linesVisualization.setSelection([e]);
}
function lineMouseOut(e) {
    linesVisualization.setSelection([{'row': null, 'column': null}]);
}
​