如何获得当前节点的索引值?
<?xml version="1.0" encoding="gb2312"?>
<?xml-stylesheet type="text/xsl" href="telbook.xsl"?>
<telbook>
<tel>
<name>a</name>
<mobile>13822808525</mobile>
<home>0755-82418473</home>
<office>0755-82406580</office>
</tel>
<tel>
<name>b</name>
<mobile>13825228085</mobile>
<home>0755-82418473</home>
<office>0755-82406580</office>
</tel>
<tel>
<name>c</name>
<mobile>13852280852</mobile>
<home>0755-82418473</home>
<office>0755-82406580</office>
</tel>
</telbook>
我在XSL中循环显示tel节点时,怎样获得当前节点的索引值?