static/admin/TinyMCETextArea.js
function () {
        var me = this;

        if (!me.storedCursorPosition) {
            return;
        }

        var wwg_mode = false;

        var ed = tinymce.get(me.getInputId());

        if (me.wysiwygIntialized) {
            if (ed && !ed.isHidden()) {
                wwg_mode = true;
            }
        }

        var ctrl = document.getElementById(me.getInputId());

        if (wwg_mode) {
            ed.selection.moveToBookmark(me.storedCursorPosition);
        }
        else if (ctrl) {
            ctrl.setSelectionRange(me.storedCursorPosition.start, me.storedCursorPosition.end);
        }
    }
function () {
        var me = this;

        if (!me.storedCursorPosition) {
            return;
        }

        var wwg_mode = false;

        var ed = tinymce.get(me.getInputId());

        if (me.wysiwygIntialized) {
            if (ed && !ed.isHidden()) {
                wwg_mode = true;
            }
        }

        var ctrl = document.getElementById(me.getInputId());

        if (wwg_mode) {
            ed.selection.moveToBookmark(me.storedCursorPosition);
        }
        else if (ctrl) {
            ctrl.setSelectionRange(me.storedCursorPosition.start, me.storedCursorPosition.end);
        }
    }
storeCurrentSelection -----------------------------------------------------------------