I have an image map that's generated through a xsl file:

<xsl:template match="OAREA" priority="1">
....

That's basically all what I know about it, and I want to change the class name of this image map when the mouse moves over it. I have tried this, but it doesn't work:

<xsl:attribute name="onmouseover">this.className="blah";</xsl:attribute>

Even this doesn't work:

<xsl:attribute name="class">blah</xsl:attribute>


What's going wrong here?