<xsl:template match="/">
        <div class="tagcloud">
            <p>
            <xsl:for-each select="tagsLib:getAllTags()/tags/tag">
                <xsl:sort select="." order="ascending"/>
                <a href="{umbraco.library:NiceUrl($currentPage/ancestor-or-self::node [@nodeTypeAlias = 'KeywordstoSearchUpon']/@id)}?filterby={.}">
                    <xsl:attribute name="class">
                        <xsl:choose>
                            <xsl:when test="@nodesTagged &gt; 5">
                                <xsl:value-of select="string('tagweight5')"  />
                            </xsl:when>
                            <xsl:otherwise>
                                <xsl:value-of select="concat('tagweight',@nodesTagged)"/>
                            </xsl:otherwise>
                        </xsl:choose>
                    </xsl:attribute>
                    <xsl:value-of select="."/>
                </a>
                <xsl:text> </xsl:text>
            </xsl:for-each>
            </p>
        </div>

    </xsl:template>

Ayone Trying to do this. I am stuck on this for a while