var term = term.toUpperCase().replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1").replace(/[A-Z0-9]/g, function(m, offset) {
                    return offset === 0 ? '(?:' + m + '|^' + m.toLowerCase() + ')' : '(?:(?:[^<>]|<[^<>]*>)*' + m + '|' + m.toLowerCase() + ')';
                });