accessing attributes of a node

Hello experts!

I have got the following template:

<xsl:template match="h2 | h3 | h4 | h5 | h6">
<fo:block id="{translate(@link_id,'#','x')}" font-size="{$h2_size}">
...
</fo:block>
</xsl:template

Every node (h2, h3, h4,...) has a "size"-attribute (h2 as h2_size, h3 has
h3_size,...) which tells the font size the node should be formatted.

I have tried the following (not working):
...
<fo:block id="{translate(@link_id,'#','x')}" font-size="{@{name(.)}_size}">
...

How can i access the hx_size attribute of each node?

Thanks
Markus

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