Does anybody knows how to change the AXIS title font size???


<apex:axis title="Opps" fields="data" type="Category" position="bottom" grid="true" minimum="0" dashSize="1">
    <apex:chartLabel font="10px Helvetica, sans-serif" "/>
</apex:axis>

the above syntax is only changing the font size for each value in the DATA COLLECTION of my chart, but I want to set the "Opps" title to 10px font size....