Controlling Chart Parameters Using JavaScript
Type in the parameter name and value and click the set button.
HTML code:
<applet code=com.objectplanet.chart.ChartApplet
 archive=chart.jar width=300 height=200 name=BarChart>
<param name=chart value="bar">
<param name=sampleValues value="10,20,30,40,50">
</applet>

<form name="input">
<input name="param" value="valueLinesOn" size=18>
<input name="paramvalue" value="true" size=18>
<input name="set" type="button" value="set" onClick=repaint()>
</form>

<script language="JavaScript">
<!--
function repaint() {
   document.BarChart.setParameter(document.input.param.value, document.input.paramvalue.value);
}
//-->
</script>

Select a bar or legend entry and click the button to get the index of the selected sample and series.

lastSelectedSample
lastSelectedSeries
Push the "make small" and "make large" buttons to change the size of the chart.
(Works only with IE)

HTML code:
<applet code=com.objectplanet.chart.ChartApplet archive=chart.jar
 width=350 height=250 name=ResizableChart>
<param name=chart value="bar">
<param name=sampleValues value="10,20,30,40,50">
</applet>

<form name="resize">
<input name="small" type="button" value="make large" onClick=makeLarge()>
<input name="large" type="button" value="make small" onClick=makeSmall()>
</form>

<script language="JavaScript">
<!--
function makeLarge() {
   document.ResizableChart.width=350;
   document.ResizableChart.height=250;
}
function makeSmall() {
   document.ResizableChart.width=260;
   document.ResizableChart.height=180;
}
//-->
</script>

Push the "bar", "line" and "pie" buttons to switch between chart types.

HTML code:
<applet code=com.objectplanet.chart.ChartApplet archive=chart.jar
 width=300 height=200 name=SwitchChart>
<param name=chart value="bar">
<param name=sampleValues value="20,10,40,30,50">
</applet>

<form name="resize">
<INPUT TYPE="BUTTON" NAME="bar" VALUE="bar" onClick=setbar()>
<INPUT TYPE="BUTTON" NAME="line" VALUE="line" onClick=setline()>
<INPUT TYPE="BUTTON" NAME="pie" VALUE="pie" onClick=setpie()>
</form>

<script LANGUAGE="JavaScript">
<!--
function setbar() {
   document.SwitchChart.setParameter("chart", "bar");
}
function setline() {
   document.SwitchChart.setParameter("chart", "line");
}
function setpie() {
   document.SwitchChart.setParameter("chart", "pie");
}
//-->
</script>