little information about jsni

[jesus]

Hi, i have this problem:

[code]public static native void getGraficosNuevos() /*-{
var chart;
$(document).ready(function() {
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
defaultSeriesType: 'bar'
},
title: {
text: 'Historic World Population by Region'
},
subtitle: {
text: 'Source: Wikipedia.org'
},
xAxis: {
categories: ['Africa', 'America', 'Asia', 'Europe', 'Oceania'],
title: {
text: null
}
},
yAxis: {
min: 0,
title: {
text: 'Population (millions)',
align: 'high'
}
},
tooltip: {
formatter: function() {
return '<b>'+ this.x +'</b><br/>'+
this.series.name +': '+ this.y +' millions';
}
},
plotOptions: {
bar: {
dataLabels: {
enabled: true,
color: 'auto'
}
}
},
legend: {
layout: 'vertical',
style: {
left: 'auto',
bottom: 'auto',
right: '100px',
top: '100px'
},
borderWidth: 1,
backgroundColor: '#FFFFFF'
},
credits: {
enabled: false
},
series: [{
name: 'Year 1800',
data: [107, 31, 635, 203, 2]
}, {
name: 'Year 1900',
data: [133, 156, 947, 408, 6]
}, {
name: 'Year 2008',
data: [973, 914, 4054, 732, 34]
}]
});


});


}-*/;
[/code]
call this method and the exception is as follows:

***
com.google.gwt.core.client.JavaScriptException: (ReferenceError): $ is
not defined.

***

can you help?.
I need to know how to run this script in gwt.

thank you very much

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