鼠标移到google chart区域内变为手指型

 

var chart_div = document.getElementById("chart_div_id");

var chart = new google.visualization.ComboChart(chart_div);

google.visualization.events.addListener(chart, 'onmouseover', function handler(e){

    chart_div.find("iframe").contents().find("body").css("cursor", "pointer");

});