function html_encode(str) { var s = ""; if (str.length == 0) return ""; s = str.replace(/&/g, "&gt;"); s = s.replace(/</g, "&lt;"); s = s.replace(/>/g, "&gt;"); s = s.replace(/ /g, "&nbsp;"); s = s.replace(/\'/g, "&#39;"); s = s.replace(/\"/g, "&quot;"); s = s.replace(/\n/g, "<br>"); return s; } function html_decode(str) { var s = ""; if (str.length == 0) return ""; s = str.replace(/&gt;/g, "&"); s = s.replace(/&lt;/g, "<"); s = s.replace(/&gt;/g, ">"); s = s.replace(/&nbsp;/g, " "); s = s.replace(/&#39;/g, "\'"); s = s.replace(/&quot;/g, "\""); s = s.replace(/<br>/g, "\n"); return s; }