function sendAjax(file, handler, data) {
        var xmlUpdate = false;
        var self = this;
        self.xmlUpdate = getXMLRO();
        var dada = new Date();
        var strURL = 'ajax/'+file+'?ts_junker='+dada.getTime();
        if (data) {
            self.xmlUpdate.open('POST', strURL, true);
            self.xmlUpdate.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        } else {
            self.xmlUpdate.open('GET', strURL, true);
        }
        var tFunc = function(myhandler) { return function() {
            if (self.xmlUpdate.readyState == 4 && self.xmlUpdate.status == 200) {
                myhandler(self.xmlUpdate.responseXML);
            }
        } }
        self.xmlUpdate.onreadystatechange = tFunc(handler);
        if (data == null)
            self.xmlUpdate.send(null);
        else {
            var out = '';
            for(var i = 0; i < data[0].length; i++) {
                if (out != '')
                    out = out + '&';
                out = out + escape(data[0][i])+'='+escape(data[1][i]);
            }
            self.xmlUpdate.send(out);
        }
        return false;
    }