text: /**
  *
  *  SHA1 (Secure Hash Algorithm) for use in pidCrypt Library
  *  Depends on pidCrypt (pidcrypt.js, pidcrypt_util.js)
  *
  *  For original source see http://www.webtoolkit.info/
  *  Download: 02.03.2009 from http://www.webtoolkit.info/javascript-sha1.html
  **/
  
  if(typeof(pidCrypt) != 'undefined') {
    pidCrypt.SHA1 = function(msg) {
  
      function rotate_left(n,s) {
        var t4 = ( n<<s ) | (n>>>(32-s));
        return t4;
      };
  
      function lsb_hex(val) {
        var str="";
        var i;
        var vh;
        var vl;
  
        for( i=0; i<=6; i+=2 ) {
          vh = (val>>>(i*4+4))&0x0f;
          vl = (val>>>(i*4))&0x0f;
          str += vh.toString(16) + vl.toString(16);
        }
        return str;
      };
  
      function cvt_hex(val) {
        var str="";
        var i;
        var v;
  
        for( i=7; i>=0; i-- ) {
          v = (val>>>(i*4))&0x0f;
          str += v.toString(16);
        }
        return str;
      };
  
      //**	function Utf8Encode(string) removed. Aready defined in pidcrypt_utils.js
     
      var blockstart;
      var i, j;
      var W = new Array(80);
      var H0 = 0x67452301;
      var H1 = 0xEFCDAB89;
      var H2 = 0x98BADCFE;
      var H3 = 0x10325476;
      var H4 = 0xC3D2E1F0;
      var A, B, C, D, E;
      var temp;
  
      //msg = pidCryptUtil.encodeUTF8(msg);
  
      var msg_len = msg.length;
  
      var word_array = new Array();
      for( i=0; i<msg_len-3; i+=4 ) {
        j = msg.charCodeAt(i)<<24 | msg.charCodeAt(i+1)<<16 |
        msg.charCodeAt(i+2)<<8 | msg.charCodeAt(i+3);
        word_array.push( j );
      }
  
      switch( msg_len % 4 ) {
        case 0:
          i = 0x080000000;
        break;
        case 1:
          i = msg.charCodeAt(msg_len-1)<<24 | 0x0800000;
        break;
  
        case 2:
          i = msg.charCodeAt(msg_len-2)<<24 | msg.charCodeAt(msg_len-1)<<16 | 0x08000;
        break;
  
        case 3:
          i = msg.charCodeAt(msg_len-3)<<24 | msg.charCodeAt(msg_len-2)<<16 | msg.charCodeAt(msg_len-1)<<8	| 0x80;
        break;
      }
  
      word_array.push( i );
  
      while( (word_array.length % 16) != 14 ) word_array.push( 0 );
  
      word_array.push( msg_len>>>29 );
      word_array.push( (msg_len<<3)&0x0ffffffff );
  
  
      for ( blockstart=0; blockstart<word_array.length; blockstart+=16 ) {
  
        for( i=0; i<16; i++ ) W[i] = word_array[blockstart+i];
        for( i=16; i<=79; i++ ) W[i] = rotate_left(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1);
  
        A = H0;
        B = H1;
        C = H2;
        D = H3;
        E = H4;
  
        for( i= 0; i<=19; i++ ) {
          temp = (rotate_left(A,5) + ((B&C) | (~B&D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;
          E = D;
          D = C;
          C = rotate_left(B,30);
          B = A;
          A = temp;
        }
  
        for( i=20; i<=39; i++ ) {
          temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;
          E = D;
          D = C;
          C = rotate_left(B,30);
          B = A;
          A = temp;
        }
  
        for( i=40; i<=59; i++ ) {
          temp = (rotate_left(A,5) + ((B&C) | (B&D) | (C&D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;
          E = D;
          D = C;
          C = rotate_left(B,30);
          B = A;
          A = temp;
        }
  
        for( i=60; i<=79; i++ ) {
          temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;
          E = D;
          D = C;
          C = rotate_left(B,30);
          B = A;
          A = temp;
        }
  
        H0 = (H0 + A) & 0x0ffffffff;
        H1 = (H1 + B) & 0x0ffffffff;
        H2 = (H2 + C) & 0x0ffffffff;
        H3 = (H3 + D) & 0x0ffffffff;
        H4 = (H4 + E) & 0x0ffffffff;
  
      }
  
      var temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);
  
      return temp.toLowerCase();
    };
  }