//Search and Replace function for some inputs.
function SearchAndReplace(Content, SearchFor, ReplaceWith)
{

	var tmpContent = Content;
	var tmpBefore = new String();
	var tmpAfter = new String();
	var tmpOutput = new String();
	var intBefore = 0;
	var intAfter = 0;

	if (SearchFor.length == 0)
		return;


	while (tmpContent.toUpperCase().indexOf(SearchFor.toUpperCase()) > -1) {

		// Get all content before the match
		intBefore = tmpContent.toUpperCase().indexOf(SearchFor.toUpperCase());
		tmpBefore = tmpContent.substring(0, intBefore);
		tmpOutput = tmpOutput + tmpBefore;

		// Get the string to replace
		tmpOutput = tmpOutput + ReplaceWith;


		// Get the rest of the content after the match until
		// the next match or the end of the content
		intAfter = tmpContent.length - SearchFor.length + 1;
		tmpContent = tmpContent.substring(intBefore + SearchFor.length);

	}

	return tmpOutput + tmpContent;

}


function PrepIO(ElementID)
{
	var Element = document.getElementById(ElementID);

	if(Element)
	{

		var Text = Element.value;

		Text = SearchAndReplace(Text, "=", "%3D");
		Text = SearchAndReplace(Text, "&", "%26");
		Text = SearchAndReplace(Text, "\n\n", "</P><P>");
		Text = SearchAndReplace(Text, "\n", "<BR>");
		Text = SearchAndReplace(Text, "\r", "");

		Text = "<P>" + Text + "</P>";

		Element.value = Text;

	} else {
		alert("Could not PrepIO for Element: " + ElementID);
	}

	return true;
}



////////////////////////////////////////////////////////////////////
// Misc Functions
var hex_tab = "0123456789abcdef"
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"

function char2hex(i) {
  return ("" + tab.charAt(i >> 4) + tab.charAt(i & 0xF));
}

//function word2hex(i)
//{ return binl2hex([i]); }

function bin2asc(data)
{
  var output = "";
  for(i = 0; i < data.length; i++)
    output += int2hex(data.charCodeAt(i));
  return output;
}

function asc2bin(data)
{
  var output = "";
  for(i = 0; i < data.length; i+=2)
    output += String.fromCharCode(parseInt(data.substr(i,2),16));
  return output;
}

// Convert an array of little-endian words to a hex string.
function binl2hex(binarray)
{
  var str = ""
  for(var i = 0; i < binarray.length * 4; i++)
  {
    str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
           hex_tab.charAt((binarray[i>>2] >> ((i%4)*8)) & 0xF)
  }
  return str
}

// Convert an array of little-endian words to a base64 encoded string.
function binl2b64(binarray)
{
  var str = ""
  for(var i = 0; i < binarray.length * 32; i += 6)
  {
    str += tab.charAt(((binarray[i>>5] << (i%32)) & 0x3F) |
                      ((binarray[i>>5+1] >> (32-i%32)) & 0x3F))
  }
  return str
}

// Convert an 8-bit character string to a sequence of 16-word blocks, stored
// as an array, and append appropriate padding for MD4/5 calculation.
// If any of the characters are >255, the high byte is silently ignored.
function str2binl(str)
{
  var nblk = ((str.length + 8) >> 6) + 1 // number of 16-word blocks
  var blks = new Array(nblk * 16)
  for(var i = 0; i < nblk * 16; i++) blks[i] = 0
  for(var i = 0; i < str.length; i++)
    blks[i>>2] |= (str.charCodeAt(i) & 0xFF) << ((i%4) * 8)
  blks[i>>2] |= 0x80 << ((i%4) * 8)
  blks[nblk*16-2] = str.length * 8
  return blks
}

// Convert a wide-character string to a sequence of 16-word blocks, stored as
// an array, and append appropriate padding for MD4/5 calculation.
function strw2binl(str)
{
  var nblk = ((str.length + 4) >> 5) + 1 // number of 16-word blocks
  var blks = new Array(nblk * 16)
  for(var i = 0; i < nblk * 16; i++) blks[i] = 0
  for(var i = 0; i < str.length; i++)
    blks[i>>1] |= str.charCodeAt(i) << ((i%2) * 16)
  blks[i>>1] |= 0x80 << ((i%2) * 16)
  blks[nblk*16-2] = str.length * 16
  return blks
}


function textToBase64(t) {
 var r=''; var m=0; var a=0; var tl=t.length-1; var c
 for(n=0; n<=tl; n++) {
  c=t.charCodeAt(n)
  r+=tab.charAt((c << m | a) & 63)
  a = c >> (6-m)
  m+=2
  if(m==6 || n==tl) {
   r+=tab.charAt(a)
//   if((n%45)==44) {r+="\n"}
   m=0
   a=0
  }
 }
 return r
}
function base64ToText(t) {
 var r=''; var m=0; var a=0; var c
 for(n=0; n<t.length; n++) {
  c=tab.indexOf(t.charAt(n))
  if(c >= 0) {
   if(m) {
    r+=String.fromCharCode((c << (8-m))&255 | a)
   }
   a = c >> m
   m+=2
   if(m==8) { m=0 }
  }
 }
 return r
}


// RC4 stream encryption
// adapted from www.cpan.org crypt::rc4 -- thanks!
function rc4(key, text) {
 var i, x, y, t, x2, kl=key.length;
 s=[];

 for (i=0; i<256; i++) s[i]=i
 y=0
 x=kl; while(x--) {
  y=(key.charCodeAt(x) + s[x] + y) % 256
  t=s[x]; s[x]=s[y]; s[y]=t
 }
 x=0;  y=0;
 var z=""
 for (x=0; x<text.length; x++) {
  x2=x & 255
  y=( s[x2] + y) & 255
  t=s[x2]; s[x2]=s[y]; s[y]=t
  z+= String.fromCharCode((text.charCodeAt(x) ^ s[(s[x2] + s[y]) % 256]))
 }
 return z
}

////////////////////////////////////////////////////////////////////
// Cookie Functions
function setCookie(name, value, expires)
{
  document.cookie = 
    name + "=" + textToBase64(value) + "; expires=" +
    (expires ? expires.toGMTString() : "") +
    "; path=/";
}

function getCookie(name)
{
  var dcookie = document.cookie; 
  var cname = name + "=";
  var clen = dcookie.length;
  var cbegin = 0;
  while (cbegin < clen)
  {
    var vbegin = cbegin + cname.length;
    if (dcookie.substring(cbegin, vbegin) == cname)
    { 
      var vend = dcookie.indexOf (";", vbegin);
      if (vend == -1) vend = clen;
      return base64ToText(dcookie.substring(vbegin, vend));
    }
    cbegin = dcookie.indexOf(" ", cbegin) + 1;
    if(cbegin == 0) break;
  }
  return null;
}

function delCookie(name)
{
  document.cookie = name + "=; expires=Thu, 01-Jan-70 00:00:01 GMT; path=/";
}


////////////////////////////////////////////////////////////////////
// MD5 Hash Algorithm
//
// Copyright notice for the MD5 source:
///////////////////////////////////////
// A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
// Digest Algorithm, as defined in RFC 1321.
// Version 1.1 Copyright (C) Paul Johnston 1999 - 2002.
// Code also contributed by Greg Holt
// See http://pajhome.org.uk/site/legal.html for details.
///////////////////////////////////////
// This version has probably been modified to suit the needs of
// this package... for the original source, visit the bove url.



// Add integers, wrapping at 2^32. This uses 16-bit operations internally
// to work around bugs in some JS interpreters.
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF)
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
  return (msw << 16) | (lsw & 0xFFFF)
}

// Bitwise rotate a 32-bit number to the left.
function rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt))
}

// These functions implement the four basic operations the algorithm uses.
function cmn(q, a, b, x, s, t)
{
  return safe_add(rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
}
function ff(a, b, c, d, x, s, t)
{
  return cmn((b & c) | ((~b) & d), a, b, x, s, t)
}
function gg(a, b, c, d, x, s, t)
{
  return cmn((b & d) | (c & (~d)), a, b, x, s, t)
}
function hh(a, b, c, d, x, s, t)
{
  return cmn(b ^ c ^ d, a, b, x, s, t)
}
function ii(a, b, c, d, x, s, t)
{
  return cmn(c ^ (b | (~d)), a, b, x, s, t)
}

// Calculate the MD5 of an array of little-endian words, producing an array
// of little-endian words.
function coreMD5(x)
{
  var a =  1732584193
  var b = -271733879
  var c = -1732584194
  var d =  271733878

  for(i = 0; i < x.length; i += 16)
  {
    var olda = a
    var oldb = b
    var oldc = c
    var oldd = d

    a = ff(a, b, c, d, x[i+ 0], 7 , -680876936)
    d = ff(d, a, b, c, x[i+ 1], 12, -389564586)
    c = ff(c, d, a, b, x[i+ 2], 17,  606105819)
    b = ff(b, c, d, a, x[i+ 3], 22, -1044525330)
    a = ff(a, b, c, d, x[i+ 4], 7 , -176418897)
    d = ff(d, a, b, c, x[i+ 5], 12,  1200080426)
    c = ff(c, d, a, b, x[i+ 6], 17, -1473231341)
    b = ff(b, c, d, a, x[i+ 7], 22, -45705983)
    a = ff(a, b, c, d, x[i+ 8], 7 ,  1770035416)
    d = ff(d, a, b, c, x[i+ 9], 12, -1958414417)
    c = ff(c, d, a, b, x[i+10], 17, -42063)
    b = ff(b, c, d, a, x[i+11], 22, -1990404162)
    a = ff(a, b, c, d, x[i+12], 7 ,  1804603682)
    d = ff(d, a, b, c, x[i+13], 12, -40341101)
    c = ff(c, d, a, b, x[i+14], 17, -1502002290)
    b = ff(b, c, d, a, x[i+15], 22,  1236535329)

    a = gg(a, b, c, d, x[i+ 1], 5 , -165796510)
    d = gg(d, a, b, c, x[i+ 6], 9 , -1069501632)
    c = gg(c, d, a, b, x[i+11], 14,  643717713)
    b = gg(b, c, d, a, x[i+ 0], 20, -373897302)
    a = gg(a, b, c, d, x[i+ 5], 5 , -701558691)
    d = gg(d, a, b, c, x[i+10], 9 ,  38016083)
    c = gg(c, d, a, b, x[i+15], 14, -660478335)
    b = gg(b, c, d, a, x[i+ 4], 20, -405537848)
    a = gg(a, b, c, d, x[i+ 9], 5 ,  568446438)
    d = gg(d, a, b, c, x[i+14], 9 , -1019803690)
    c = gg(c, d, a, b, x[i+ 3], 14, -187363961)
    b = gg(b, c, d, a, x[i+ 8], 20,  1163531501)
    a = gg(a, b, c, d, x[i+13], 5 , -1444681467)
    d = gg(d, a, b, c, x[i+ 2], 9 , -51403784)
    c = gg(c, d, a, b, x[i+ 7], 14,  1735328473)
    b = gg(b, c, d, a, x[i+12], 20, -1926607734)

    a = hh(a, b, c, d, x[i+ 5], 4 , -378558)
    d = hh(d, a, b, c, x[i+ 8], 11, -2022574463)
    c = hh(c, d, a, b, x[i+11], 16,  1839030562)
    b = hh(b, c, d, a, x[i+14], 23, -35309556)
    a = hh(a, b, c, d, x[i+ 1], 4 , -1530992060)
    d = hh(d, a, b, c, x[i+ 4], 11,  1272893353)
    c = hh(c, d, a, b, x[i+ 7], 16, -155497632)
    b = hh(b, c, d, a, x[i+10], 23, -1094730640)
    a = hh(a, b, c, d, x[i+13], 4 ,  681279174)
    d = hh(d, a, b, c, x[i+ 0], 11, -358537222)
    c = hh(c, d, a, b, x[i+ 3], 16, -722521979)
    b = hh(b, c, d, a, x[i+ 6], 23,  76029189)
    a = hh(a, b, c, d, x[i+ 9], 4 , -640364487)
    d = hh(d, a, b, c, x[i+12], 11, -421815835)
    c = hh(c, d, a, b, x[i+15], 16,  530742520)
    b = hh(b, c, d, a, x[i+ 2], 23, -995338651)

    a = ii(a, b, c, d, x[i+ 0], 6 , -198630844)
    d = ii(d, a, b, c, x[i+ 7], 10,  1126891415)
    c = ii(c, d, a, b, x[i+14], 15, -1416354905)
    b = ii(b, c, d, a, x[i+ 5], 21, -57434055)
    a = ii(a, b, c, d, x[i+12], 6 ,  1700485571)
    d = ii(d, a, b, c, x[i+ 3], 10, -1894986606)
    c = ii(c, d, a, b, x[i+10], 15, -1051523)
    b = ii(b, c, d, a, x[i+ 1], 21, -2054922799)
    a = ii(a, b, c, d, x[i+ 8], 6 ,  1873313359)
    d = ii(d, a, b, c, x[i+15], 10, -30611744)
    c = ii(c, d, a, b, x[i+ 6], 15, -1560198380)
    b = ii(b, c, d, a, x[i+13], 21,  1309151649)
    a = ii(a, b, c, d, x[i+ 4], 6 , -145523070)
    d = ii(d, a, b, c, x[i+11], 10, -1120210379)
    c = ii(c, d, a, b, x[i+ 2], 15,  718787259)
    b = ii(b, c, d, a, x[i+ 9], 21, -343485551)

    a = safe_add(a, olda)
    b = safe_add(b, oldb)
    c = safe_add(c, oldc)
    d = safe_add(d, oldd)
  }
  return [a, b, c, d]
}

// MD5 External interface
function hexMD5 (str) { return binl2hex(coreMD5( str2binl(str))) }
function hexMD5w(str) { return binl2hex(coreMD5(strw2binl(str))) }
function b64MD5 (str) { return binl2b64(coreMD5( str2binl(str))) }
function b64MD5w(str) { return binl2b64(coreMD5(strw2binl(str))) }