example 1
------------
xml: <header>hello</header>

xsl:
<xsl:template match="header">
<h2><xsl:apply-templates/></h2>
</xsl:template>

output: <h2>hello</h2>

example 2
xml: <header remark="1">hello</header>

xsl: I want the value of attribute remark added as value for a class (see output). But the purpose is, where i use 'remark="value"' it is added the the element as 'class="value"' whatever the element is.

output: <h2 class="1">hello</h2>

examples:
<header remark="1">hello</header> -> <h2 class="1">hello</h2>
<para remark="2">test</para> -> <p class="2">test</p>

thus, whatever the element, attribute remark should be added to the element as class="value"

Extra:
suppose have this:
<para>test</para> -> <p class="format1>test</p>
<para remark="2">test</para> -> <p class="format1 2">test</p>

default para is formatted as <p class="format1">, when adding attribute remark, the value of it is added to the class value.

thx,
kb

The simplest solution is probably to apply templates to the attributes as well as the child elements:

<xsl:template match="header">
  <h2 class="format1"><xsl:apply-templates select="node()|@*"/></h2>
</xsl:template>

<xsl:template match="@remark">
  <xsl:attribute name="class">
    <xsl:value-of select="."/>
  </xsl:attribute>
</xsl:template>

Note that the class defined using xsl:attribute takes precedence over the one in the literal result element.

You can also achieve this using attribute sets:

<xsl:template match="header">
  <h2 use-attribute-sets="class-set">
     <xsl:apply-templates/>
  </h2>
</xsl:template>

<xsl:attribute-set name="class-set">
  <xsl:attribute name="class">
     <xsl:choose>
        <xsl:when test="@remark=1">
            etc...

In XSLT 2.0 you can use functions:

<xsl:template match="header">
  <h2 class="{f:compute-class(.)}">
     <xsl:apply-templates/>
  </h2>
</xsl:template>




Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference