forms-field-styling.xsl jar classpath

[Andrew]

Hi,
from my understanding forms-field-styling.xsl is part of a jar in the class path (<xsl:include href="" I need to gain access to forms-field-styling.xsl so that I can change the following lines from:

    <xsl:if test="@required='true'">
      <span class="forms-field-required">*</span>
    </xsl:if>

to:

    <xsl:if test="@required='true'">
      <span class="forms-field-required"><img src="" border="0" /></span>
    </xsl:if>

Do I access the jar directly, if so where is the jar located?, or is there a source from which forms-*-.xsl files are made up from which I should edit instead?

regards

Andrew