function show(datensatz){ 
                        request.open("post", "comments.php?data="+datensatz, true);
                        request.onreadystatechange = function(){
                            if(request.readyState == 4){
                                if(request.status == 200){
                                    var str = request.responseText;
                                    var Suche = (/[\d+]/);
                                    anzahl = Suche.exec(str);
                                    str = str.replace(/\[\d*\]/g, ' '); 
                                    document.getElementById("ajax").innerHTML = str+anzahl; 
                                }
                                
                            }
                        }             
                        request.send(null);
                    }

<xsl:if test="anzahl &gt; 0">                                
                                        Kommentare(+)
                                    </xsl:if>
                                    <xsl:if test="anzahl &lt; 1">
                                        Kommentare
                                    </xsl:if>