Sets the value of the labelJsFunction property to the name of the JavaScriptS function.
●Layout
<horizontalAxis>
<CategoryAxis id="hAxis" categoryField="Month" labelJsFunction="axisLabelFunc"/>
</horizontalAxis>
●Script
Parameters
id: the ID of the axis
value: the axis label of the item
function axisLabelFunc(id, value)
{
return value + ", <font color='#0000ff'>2013</font>";
}