<div id="outerPercentContainer" style="width: 1000px; background-color: #000; border-style:solid; border-width:1px; position:relative;">
<div id="text" style="width:100%; text-align:center; color:#000; z-index:4; position:absolute;">
<?php echo $usagePercent; ?>% used (<? echo $mb ?> bytes of 500mb)
</div>
    <div id="actualPercentage" style="width: <?php echo $usagePercent; ?>%; background-color:#63F; z-index:3; position:absolute;">
    </div>
    </div>