这个js复制到一个空的html上，为什么不执行呢？

<script type="text/javascript">
    var options = {
        stacked: false,
        gutter:20,
        axis: "0 0 1 1", // Where to put the labels (trbl)
        axisystep: 10 // How many x interval labels to render (axisystep does the same for the y axis)
    };
    
    $(function() {
        // Creates canvas
        var r = Raphael("chartHolder");
        var data = [[10,20,30,50],[15,25,35,50]]
        
        // stacked: false
        var chart1 = r.barchart(40, 10, 320, 220, data, options).hover(function() {
            this.flag = r.popup(this.bar.x, this.bar.y, this.bar.value).insertBefore(this);
        }, function() {
            this.flag.animate({opacity: 0}, 500, ">", function () {this.remove();});
        });
        chart1.label([["A1",  "A2", "A3", "A4"],["B1",  "B2", "B3", "B4"]],true);
        
        
        // stacked: true
        options.stacked=true;
        
        var chart2 = r.barchart(400, 10, 320, 220, data, options).hoverColumn(function() {
            var y = [], res = [];
            for (var i = this.bars.length; i--;) {
                y.push(this.bars[i].y);
                res.push(this.bars[i].value || "0");
            }
            this.flag = r.popup(this.bars[0].x, Math.min.apply(Math, y), res.join(", ")).insertBefore(this);
        }, function() {
            this.flag.animate({opacity: 0}, 500, ">", function () {this.remove();});
        });
        chart2.label([["A"],["B"],["C"],["D"]],true);
    });
</script>

<div id="chartHolder"></div>

这是html页面，为什么用浏览器打开是空白页？

请输入代码

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$ 哪来的 没引用 jquery 把

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Raphael???