String concatenation inside open tag

Hello all,
I'm new to XSL.

I have 2 XML documents I'm using. One I loop through and basically
create an html document with the data.
The other gives rules to the data, which I get using the document()
function.

Doc1:

<document>
  <row>
    <columnA>Foo</columnA>
    <columnB>Bar</columnB>
    ...
  </row>
  ...
</document>


Doc2:
<document>
  <column>
    <name>columnB</name>
    <rule>
      <javascript>
        <function_name>myFunction</function_name>
        <parameters>
          <param>Hello</param>
          <param>
            <column>columnA</column>
          </param>
          <param>World</param>
          ...
        </parameters>
      </javascript>
    </rule>
  </column>
  ...
</document>

------

When I'm parsing doc1 and I come across columnB, I see that there should
be a javascript function instead of just outputting the data normally.
What I need as output is:

<a href="javascript:void(0)"
onclick="javascript:myFunction('Hello','Foo','World')">Bar</a>


How my initial thought to handle it is:
If there is a javascript function for this column I would output:
<a href="javascript:void(0)"

I would then add the onclick event for the function name:
onclick="javascript:myFunction(

I think I can handle that part.

The problem comes in because I don't know how to parse the parameters.
I'm in an open "<a" tag so I can't do (unless I'm mistaken) an
xsl:for-each (which is how I would normally handle this situation).
There can be an arbitrary number of parameters for any given function.
Even if I can do a for-each, I would think with all the great stuff in
XSLT there is an easier way that I'm missing.

To throw in an extra wrinkle, if the parameter has a child element named
"column", then use the value of that column name in doc1 for the current
row.

I'm using the PHP xslt processor, which I'm pretty sure is version 1.0.

I'm sorry if this type of question has been answered before, I tried
searching, but didn't know what to search for to get a hit.