<?xml version="1.0"?>
<tabbar  hrefmode="ajax">
    <row>
        <tab id="b1" width='100px' selected="1"  href="slow_ajax.php?num=1">SCBR 1</tab>
        <tab id="b2" width='100px' href="slow_ajax.php?num=2">SCBR 2</tab>
        <tab id="b3" width='100px' href="slow_ajax.php?num=3">SCBR 3</tab>
    </row>
</tabbar>