Grammalecte  Diff

        let lCurSet  = xNavBar.currentSet.split(",");
        if (lCurSet.indexOf(sButtonId) == -1) {
            let iPos = lCurSet.indexOf("spellingButton") + 1 || lCurSet.length;
            let aSet = lCurSet.slice(0, iPos).concat(sButtonId).concat(sButtonId2).concat(lCurSet.slice(iPos));
            xNavBar.setAttribute("currentset", aSet.join(","));
            //xNavBar.currentSet = aSet.join(",");
            Services.xulStore.persist(xNavBar, "currentset");
            //Ci.BrowserToolboxCustomizeDone(true);
        }
    },
    clearPreview: function () {
        let xPreview = document.getElementById("grammalecte-errors");
        while (xPreview.firstChild) {
            xPreview.removeChild(xPreview.firstChild);
        };