jQuery.fn.charter = function(data, div,optionsA,tooltip) {
	ttta = tooltip;
    function showTooltip(x, y, contents, pos) {
        $('<div id="tooltip">' + contents + ' - ' + tooltips[pos] + '</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);
    }


    var placeholder = $(div);
    var previousPoint = null;
	
    $(div).bind("plothover", function (event, pos, item) {
		if (item && tooltip) {
			if (previousPoint != item.datapoint) {
				previousPoint = item.datapoint;
				
				$("#tooltip").remove();
				var x = item.datapoint[0].toFixed(2),
					y = item.datapoint[1].toFixed(2);				
				showTooltip(item.pageX, item.pageY,item.series.label,item.datapoint[0] - 1 );
			}
		} else {
			$("#tooltip").remove();
			previousPoint = null;
		}
    });
    
    var plot = $.plot(placeholder, data, optionsA);
}