$(function () {

// Data in format [[x1,y1],[x1,y1]]

       var plot = $.plot($("#placeholder"), [        {
            data: d1, 
            label: name1, 
            lines: { show: true, fill: true },
            color: "#FF6D6D",
            threshold: { below: 0, label: name1, color: "#87CEFA" },
            shadowSize: 3
        }],
            {
            xaxis: {
            mode: "time",
            timeformat: "%m/%y",
            min: (new Date("1979/01/01")).getTime(),
            max: (new Date("2010/05/01")).getTime()
            },
            grid: {
            borderColor: "#383875",
            borderWidth: 1,
            backgroundColor: { colors: ["#ddd", "#fafafa"] },
            hoverable: true,
            autoHighlight: true,
            mouseActiveRadius: 50
            },
            legend: {
            backgroundOpacity: 0.5,
            position: "nw"
            }
          
            });
           


    
    function showTooltip(x, y, contents) {
        $('<div id="tooltip">' + contents + '</div>').css( {
            position: 'absolute',
            display: 'none',
            top: y + 5,
            left: x + 5,
            border: '1px solid #eee',
            padding: '2px',
            'background-color': '#fff',
            opacity: 0.80
        }).appendTo("body").fadeIn(200);
    }
    
    
    var previousPoint = null;
    $("#placeholder").bind("plothover", function (event, pos, item) {
        $("#x").text(pos.x.toFixed(2));
        $("#y").text(pos.y.toFixed(2));

       // if ($("#enableTooltip:checked").length > 0) {
            if (item) {
                if (previousPoint != item.datapoint) {
                    previousPoint = item.datapoint;
                    
                    $("#tooltip").remove();
                    var x = item.datapoint[0].toFixed(3),
                        y = item.datapoint[1].toFixed(3);
                    var hy = new Date(x*1);
                    var day = hy.getDate();
                    var mo = hy.getMonth()+1;
                    var yr = hy.getFullYear();
                    //var os = new Date.getMonth(x);
                    showTooltip(item.pageX, item.pageY,
                                mo + "/"+yr+": " + y+"&deg;C");
                }
            }
            else {
                $("#tooltip").remove();
                previousPoint = null;            
            }
        //}
    });


            
});