fusioncharts 显示一半,该如何解决

var xml="<chart caption='"+title+"' animation='0' lineThickness='1' labelDisplay='WRAP' xAxisName='' yAxisName='成绩' yAxisMaxValue='5' showValues='0' connectNullData='1' formatNumberScale='0'    divLineAlpha='20' divLineColor='CC3300' divLineIsDashed='1' showAlternateHGridColor='1' alternateHGridAlpha='5' alternateHGridColor='CC3300' shadowAlpha='40' numvdivlines='"+lineNum+"' chartRightMargin='100' chartLeftMargin='50'>";
xml+="<categories>";
//省略添加category...貌似有四五百个...

xml+="</categories>";
xml+="<dataset showLabel='1' color='1D8BD1' anchorBorderColor='1D8BD1' anchorBgColor='1D8BD1'>";
//省略添加set...跟category数量一样，四五百个...
xml+="</dataset>";
xml+="</chart>";    
chart.setDataXML(xml);           
chart.render("chart1");