function a(was, wo) {
    var xmlhttp;
    if (window.XMLHttpRequest){
        // IE7+, Firefox, Chrome, Opera, Safari
        xmlhttp=new XMLHttpRequest();
    }else if (window.ActiveXObject){
        // IE6, IE5
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        alert("Your browser does not support XMLHTTP!");
    }
    xmlhttp.onreadystatechange=function(){
        if(xmlhttp.readyState==4){
            if(document.getElementById(wo).innerHTML==xmlhttp.responseText){
                // wenn list, dann wieder einklappbar, also auf null setzen.
                var test = wo.indexOf("list");
                if(test === 0){
                    document.getElementById(wo).innerHTML = " ";
                }else{}
            }else{
                document.getElementById(wo).innerHTML=xmlhttp.responseText;
            }
        }
    };
    was2 = "s/" + was + ".html";
    if( was.search(/\.p/) != -1){
        was2 = "s/" + was + "hp";
    }
    if( was.search(/a\//) != -1){
        was2 = was + ".php";
    }
    xmlhttp.open("GET", was2,true);
    xmlhttp.send(null);
}