<SCRIPT LANGUAGE="JavaScript">    <!-- Begin    function Encrypt(str, pwd) {        if(str=="")return "";        str = escape(str);        if(!pwd || pwd==""){ var pwd="1234"; }        pwd = escape(pwd);          if(pwd == null || pwd.length <= 0) {            alert("Please enter a password with which to encrypt the message.");              return null;          }          var prand = "";          for(var I=0; I<pwd.length; I++) {            prand += pwd.charCodeAt(I).toString();          }          var sPos = Math.floor(prand.length / 5);          var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos*2) + prand.charAt(sPos*3) + prand.charAt(sPos*4) + prand.charAt(sPos*5));          var incr = Math.ceil(pwd.length / 2);          var modu = Math.pow(2, 31) - 1;          if(mult < 2) {            alert("Algorithm cannot find a suitable hash. Please choose a different password. /nPossible considerations are to choose a more complex or longer password.");            return null;          }          var salt = Math.round(Math.random() * 1000000000) % 100000000;          prand += salt;          while(prand.length > 10) {            prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString();          }          prand = (mult * prand + incr) % modu;        var enc_chr = "";        var enc_str = "";        for(var I=0; I<str.length; I++) {            enc_chr = parseInt(str.charCodeAt(I) ^ Math.floor((prand / modu) * 255));            if(enc_chr < 16) {                enc_str += "0" + enc_chr.toString(16);            }else                enc_str += enc_chr.toString(16);            prand = (mult * prand + incr) % modu;        }          salt = salt.toString(16);          while(salt.length < 8)salt = "0" + salt;        enc_str += salt;        return enc_str;    }    function Decrypt(str, pwd) {        if(str=="")return "";        if(!pwd || pwd==""){ var pwd="1234"; }        pwd = escape(pwd);          if(str == null || str.length < 8) {            alert("A salt value could not be extracted from the encrypted message because it's length is too short. The message cannot be decrypted.");            return;          }          if(pwd == null || pwd.length <= 0) {            alert("Please enter a password with which to decrypt the message.");            return;          }          var prand = "";          for(var I=0; I<pwd.length; I++) {            prand += pwd.charCodeAt(I).toString();          }          var sPos = Math.floor(prand.length / 5);          var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos*2) + prand.charAt(sPos*3) + prand.charAt(sPos*4) + prand.charAt(sPos*5));          var incr = Math.round(pwd.length / 2);          var modu = Math.pow(2, 31) - 1;          var salt = parseInt(str.substring(str.length - 8, str.length), 16);          str = str.substring(0, str.length - 8);          prand += salt;          while(prand.length > 10) {            prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString();          }          prand = (mult * prand + incr) % modu;          var enc_chr = "";          var enc_str = "";        for(var I=0; I<str.length; I+=2) {            enc_chr = parseInt(parseInt(str.substring(I, I+2), 16) ^ Math.floor((prand / modu) * 255));            enc_str += String.fromCharCode(enc_chr);            prand = (mult * prand + incr) % modu;        }        return unescape(enc_str);    }    //  End -->    </script>