//
//  youtube.js
//

var specialChars = new Array(
  0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
  0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0xfffd, 0x017d, 0xfffd,
  0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0xfffd, 0x017e, 0x0178
);

function getstr(str, pos) {
  var res = str.charCodeAt(pos);

  if ( res == 0xfffd ) {
    return 0;
  }

  for ( var i = 0; i < specialChars.length; i++ ) {
    if ( res == specialChars[i] ) {
	    res = 0x80 + i;
    }
  }
  return res;
}

function ReverseString(str) {
  var chara;
  var i = 0;
  var result = new String("");

  while( i < str.length ) {
    var code = 0;
    chara = getstr( str, i++ );
    if ( chara == 0 ) {
	    continue;
    } else if ( chara < 0x80 ) {
      code |= chara;
    } else if ( chara < 0xe0 ) {
      code |= (chara & 0x001f) << 6;
	    chara = getstr( str, i++ );
	    if ( chara == 0    ) {
        continue;
      }
	    if ( chara == 0x20 ) {
        chara = 0xa0;
      }
      code |= (chara & 0x003f);
    } else if ( chara < 0x100 ) {
      code |= (chara & 0x000f) << 12;
	    chara = getstr( str, i++ );
	    if ( chara == 0    ) {
        continue;
      }
	    if ( chara == 0x20 ) {
        chara = 0xa0;
      }
      code |= (chara & 0x003f) << 6;
	    chara = getstr( str, i++ );
	    if ( chara == 0    ) {
        continue;
      }
	    if ( chara == 0x20 ) {
        chara = 0xa0;
      }
      code |= (chara & 0x003f);
    } else {
    code = chara;
	  }
    result += String.fromCharCode(code);
  }
  return result;
}