Raphael.fn.drawGrid = function (x, y, w, h, wv, hv, color) {
    color = color || "#000";
    var path = ["M", x, y, "L", x + w, y, x + w, y + h, x, y + h, x, y],
        rowHeight = h / hv,
        columnWidth = w / wv;
    for (var i = 1; i < hv; i++) {
        path = path.concat(["M", x, y + i * rowHeight, "L", x + w, y + i * rowHeight]);
    }
    for (var i = 1; i < wv; i++) {
        path = path.concat(["M", x + i * columnWidth, y, "L", x + i * columnWidth, y + h]);
    }
    return this.path(path.join(",")).attr({stroke: color});
};

$(function () {
    $("#data").css({
        position: "absolute",
        left: "-9999em",
        top: "-9999em"
    });
});



function draw_graph(unit, timeframe, textlabels) {
    // Grab the data
    var labels = [],
        data = [];
    $("#data tfoot th").each(function () {
        labels.push($(this).html());
    });
    $("#data tbody" + "#" + unit + " td").each(function () {
        data.push($(this).html());
    });
    
    // Draw
    var width = 800,
        height = 250,
        leftgutter = 30,
        bottomgutter = 20,
        topgutter = 20,
        size = $("#" + unit + " tr").children().size() -1,
        colorhue = .6 || Math.random(),
        color = "hsb(" + [colorhue, 1, .75] + ")",
        r = Raphael("holder-"+unit, width, height),
        txt = {font: '12px Helvetica, Arial', fill: "#fff"},
        txt1 = {font: '12px Helvetica, Arial', fill: "#fff"},
        X = (width - leftgutter) / labels.length,
        max = Math.max.apply(Math, data),
        min = Math.min.apply(Math, data),
        range = (max == min ? 1 : max - min);
        Y = (height - bottomgutter - topgutter) / range; // range 
    r.drawGrid(leftgutter + X * .5, topgutter, width - leftgutter - X, height - topgutter - bottomgutter, size , 4, "#666");
    var path = r.path().attr({stroke: color, "stroke-width": 4, "stroke-linejoin": "round"}),
        bgp = r.path().attr({stroke: "none", opacity: .3, fill: color}).moveTo(leftgutter + X * .5, height - bottomgutter),
        frame = r.rect(10, 10, 100, 40, 5).attr({fill: "#000", stroke: "#474747", "stroke-width": 1, opacity: 0.7}).hide(),
        label = [],
        is_label_visible = false,
        leave_timer,
        blanket = r.set();
    label[0] = r.text(60, 10, "").attr(txt).hide();
    label[1] = r.text(60, 40, "").attr(txt1).attr({fill: "#fff"}).hide();

    for (var i = 0, ii = labels.length; i < ii; i++) {
        var y = Math.round(((height - bottomgutter - topgutter) *  (max - data[i])/range) + topgutter),
            x = Math.round(leftgutter + X * (i + .5)),
            l = textlabels[i]; //,
        bgp[i == 0 ? "lineTo" : "cplineTo"](x, y, 10);
        path[i == 0 ? "moveTo" : "cplineTo"](x, y, 10);
        
        var dot = r.circle(x, y, 7).attr({fill: color, stroke: "none"});
        blanket.push(r.rect(leftgutter + X * i, 0, X, height - bottomgutter).attr({stroke: "none", fill: "#fff", opacity: 0}));
        var rect = blanket[blanket.length - 1];
        
        (function (x, y, data, lbl, dot) {
            var timer, i = 0;
            $(rect.node).hover(function () {
                clearTimeout(leave_timer);
                var newcoord = {x: x - 50, y: y - 45};
                if (newcoord.x + 100 > width) {
                    newcoord.x -= 20;
                }
                if (newcoord.y < 0) {
                    newcoord.y += 45;
                }
                frame.show().animate({x: newcoord.x, y: newcoord.y}, 200 * is_label_visible);
                label[0].attr({text: data + " " + unit + ((data % 10 == 1) ? "" : "s")}).show().animateWith(frame, {x: +newcoord.x + 50, y: +newcoord.y + 12}, 200 * is_label_visible);
                label[1].attr({text: textlabels[lbl -1]}).show().animateWith(frame, {x: +newcoord.x + 50, y: +newcoord.y + 27}, 200 * is_label_visible);
                // label[1].attr({text: size + 1 - lbl + " " + timeframe + ((size + 1 - lbl < 2) ? "" : "s") +" ago"}).show().animateWith(frame, {x: +newcoord.x + 50, y: +newcoord.y + 27}, 200 * is_label_visible);
                dot.attr("r", 10);
                dot.attr({fill: "#000", opacity: 0.7});
                is_label_visible = true;
            }, function () {
                dot.attr("r", 7);
                dot.attr({fill: color, opacity: 1});
                leave_timer = setTimeout(function () {
                    frame.hide();
                    label[0].hide();
                    label[1].hide();
                    is_label_visible = false;
                    // r.safari();
                }, 1);
            });
        })(x, y, data[i], labels[i], dot);
    }
    bgp.lineTo(x, height - bottomgutter).andClose();
    frame.toFront();
    label[0].toFront();
    label[1].toFront();
    blanket.toFront();
};