[xsl] xsl:if / variables / fancy / confusing

["Johnathon Wright" <jw@xxxxxxxxxxxxx>]

I'm sure someone will be able to chew through this easily. I can not.

I've got

<configuration>
   ...
   <details>
   ...
       <errors>
           <attribute_285>Please select a Color</attribute_286>
           <attribute_297>Please select a Frame Color</attribute_297>
       </errors>
   </details>
...
</configuration>

and what I want to do is change the style of the drop down with the same 
name if an error is include in the XSL. This is for form validation. If they 
don't select a color, etc., it will come back and display that drop-down in 
some obnoxious color.

Here is the code to generate the select statement:

   <xsl:for-each select="attribute">
    <select name="attribute_{attribute_id}">

     <option value="">Select a <xsl:value-of select="attribute_name" /> 
</option>
    <xsl:for-each select="option">
     <option value="{option_id}"><xsl:value-of 
select="option_name"/><xsl:if test="price_offset &gt; 0"> - add 
<xsl:value-of select="format-number(price_offset, '$###,###,.00')" 
/></xsl:if></option>
    </xsl:for-each>
       </select>
   </xsl:for-each>

I was thinking:

<select name="attribute_{attribute_id}">
   <xsl:if 
test="/configuration/details/errors/attribute_{attribute_id}"><xsl:attribute 
name="style">xyz</xsl:attribute></xsl:if>

but it doesn't like that AT ALL.

Just for reference, it will be used on a page like this:

http://www.massageking.com/products/Aphrodite-Wet-Hydraulic/Golden-Ratio-Aphrodite-Wet-Hydraulic/858/2/1

Any ideas?