public static String javaScriptStringEnc(String s) { 
            int ln = s.length();
            for (int i = 0; i < ln; i++) {
                        char c = s.charAt(i);
                        if ((c == '"') || (c == '\'') || (c == '\\') || (c == '>') || (c < ' ')) { 
                                    StringBuffer b = new StringBuffer(ln + 4);
                                    b.append(s.substring(0, i)); 
                                    while (true) { 
                                                if (c == '"'){ 
                                                            b.append("\\\""); 
                                                }else if (c == '\''){
                                                            b.append("\\'");
                                                }else if (c == '\\'){ 
                                                            b.append("\\\\"); 
                                                }else if (c == '>'){ 
                                                            b.append("\\>"); 
                                                }else if (c < ' '){ 
                                                                        if (c == '\n'){ 
                                                                                    b.append("\\n"); 
                                                                        } else if (c == '\r') {
                                                                                    b.append("\\r");
                                                                        } else if (c == '\f') {
                                                                                    b.append("\\f");
                                                                        } else if (c == '\b') { 
                                                                                    b.append("\\b"); 
                                                                        } else if (c == '\t') {
                                                                                    b.append("\\t");
                                                                        } else { 
                                                                                    b.append("\\x"); 
                                                                                    int x = c / '\020';
                                                                                    b.append((char)(x < 10 ? x + 48 : x - 10 + 65));
                                                                                    x = c & 0xF;
                                                                                    b.append((char)(x < 10 ? x + 48 : x - 10 + 65));
                                                                        }
                                                }else{ 
                                                                        b.append(c); 
                                                } 
                                                i++; 
                                                if (i >= ln) { 
                                                            return b.toString(); 
                                                } 
                                                            c = s.charAt(i); 
                                                }
                                    } 
                        }
            return s; 
}