Create a new application page with the following content:
<script>
function Chart_OnClick(theSeries, theItem, theValue){
alert("Series: " + theSeries + ", Item: " + theItem + ", Value: " + theValue);
}
</script>
<cfchart
xAxisTitle="Department"
yAxisTitle="Salary Average"
tipstyle=none
url="javascript:Chart_OnClick('$SERIESLABEL$','$ITEMLABEL$','$VALUE$');"
>
<cfchartseries type="bar" seriesLabel="Average Salaries by Department">
<cfchartData item="Finance" value="75000">
<cfchartData item="Sales" value="120000">
<cfchartData item="IT" value="83000">
<cfchartData item="Facilities" value="45000">
</cfchartseries>
</cfchart>