var myData = [];

var previousPoint = null;

    function showTooltip(x, y, contents) {
        $('<div id="tooltip">' + contents + '</div>').css( {
            position: 'absolute',
            display: 'none',
            top: y + 5,
            left: x + 5,
            border: '1px solid #fdd',
            padding: '2px',
            'background-color': '#fee',
            opacity: 0.80
        }).appendTo("body").fadeIn(200);
    }


onload = function() {


	var tickFormatter = function (val, axis) {
		var d = new Date(val);
		var month = d.getMonth();

		var monthNames = ["Jan", "Feb", "Mar", "Apr", "Maj", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"];

		if (month == 0) {
			return ""+monthNames[month] + "<br/>"+d.getFullYear();
		} else {
			return ""+monthNames[month];
		}
	};





	$.plot($("#graph-placeholder"),
		myData,
		{
			yaxis:	{ min: 0 },
			xaxis:	{ mode: 	"time", tickSize: [1, "month"], tickFormatter: tickFormatter},
			lines: 	{ show: 	true },
			colors:	["#8E10C2", "#E7E52B", "#9DCF9D"],
             		points: { show: 	true },
             		legend:	{ position: 	"se", backgroundOpacity: 0.0, container: $("#graph-legend-placeholder")},
             		grid:   { hoverable: 	true, clickable: false }
		});


	$("#graph-placeholder").bind("plothover", function (event, pos, item) {

		if (item) {
			if (previousPoint != item.datapoint) {
				previousPoint = item.datapoint;

				$("#tooltip").remove();
				var x = item.datapoint[0].toFixed(2);
				var y = item.datapoint[1].toFixed(2);
				var content = "";
				if (y != 0) {
					content = Math.round(y) + " kr/m&sup2;";
				} else {
					content = "Inga sådana objekt<br />ute till försäljning";
				}

				showTooltip(item.pageX, item.pageY, content);
			}
		} else {
			$("#tooltip").remove();
			previousPoint = null;
		}

	});

}