<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/03/customizing-a-slider-controls-data-tip/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Style>
        @font-face{
            src: local("Arial");
            fontFamily: "ArialEmbedded";
            fontWeight: bold;
        }

        HSlider {
            dataTipOffset: -22;
            dataTipStyleName: "myDataTip";
        }

        .myDataTip {
            backgroundColor: black;
            color: white;
            fontWeight: bold;
            fontFamily: ArialEmbedded;
            fontSize: 16;
        }
    </mx:Style>

    <mx:HSlider id="slider" />

</mx:Application>