function showMail()
{
  var mail = document.getElementById( 'div_mail' );
  if( mail == null ) {
    return;
  }
  var ele = "";
  var href = "";

  ele += "dev";
  ele += "@";
  ele += "desyedit";
  ele += ".";
  ele += "com";
  href += "mail";
  href += "to:";
  href += ele;
  
  mail.innerHTML = '<a href="' + href + '">' + ele + '</a>';
}
 
desyedit.util.decodeBase64 = function( input ) {
  var output = "";
  var chr1, chr2, chr3;
  var enc1, enc2, enc3, enc4;
  var i = 0;

  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
  //input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

  do {
    enc1 = keyStr.indexOf( input.charAt( i++ ) );
    enc2 = keyStr.indexOf( input.charAt( i++ ) );
    enc3 = keyStr.indexOf( input.charAt( i++ ) );
    enc4 = keyStr.indexOf( input.charAt( i++ ) );

    chr1 = ( enc1 << 2 ) | ( enc2 >> 4 );
    chr2 = ( ( enc2 & 15 ) << 4 ) | ( enc3 >> 2 );
    chr3 = ( ( enc3 & 3 ) << 6 ) | enc4;

    output = output + String.fromCharCode( chr1 );

    if( enc3 != 64 ) {
       output = output + String.fromCharCode( chr2 );
    }
    if( enc4 != 64 ) {
       output = output + String.fromCharCode( chr3 );
    }
  } while( i < input.length );

  output = desyedit.util.decodeUtf8( output );
  
  return output;
}

desyedit.util.decodeUtf8 = function( utftext )
{
  var string = "";
  var i = 0;
  var c = c1 = c2 = 0;
  while ( i < utftext.length ) {
    c = utftext.charCodeAt(i);
    if (c < 128) {
      string += String.fromCharCode(c);
      i++;
    }
    else if((c > 191) && (c < 224)) {
      c2 = utftext.charCodeAt(i+1);
      string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
      i += 2;
    }
    else {
      c2 = utftext.charCodeAt(i+1);
      c3 = utftext.charCodeAt(i+2);
      string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
      i += 3;
    }
  }
  return string;
}

desyedit.util.encodeBase64 = function( input ) {
  var output = "";
  var chr1, chr2, chr3;
  var enc1, enc2, enc3, enc4;
  var i = 0;
  
  input = desyedit.util.encodeUtf8( input );
  
  do {
    chr1 = input.charCodeAt( i++ );
    chr2 = input.charCodeAt( i++ );
    chr3 = input.charCodeAt( i++ );
  
    enc1 = chr1 >> 2;
    enc2 = ( ( chr1 & 3 ) << 4 ) | ( chr2 >> 4 );
    enc3 = ( ( chr2 & 15 ) << 2 ) | ( chr3 >> 6 );
    enc4 = chr3 & 63;
  
    if( isNaN( chr2 ) ) {
       enc3 = enc4 = 64;
    } else if( isNaN( chr3 ) ) {
       enc4 = 64;
    }
  
    output = output + keyStr.charAt( enc1 ) + keyStr.charAt( enc2 ) +
       keyStr.charAt( enc3 ) + keyStr.charAt( enc4 );
  } while( i < input.length );
  
  return output;
}

desyedit.util.encodeUtf8 = function( string )
{
  var utftext = "";
  for (var n = 0; n < string.length; n++) {
    var c = string.charCodeAt(n);
    if (c < 128) {
      utftext += String.fromCharCode(c);
    } else if( (c > 127) && (c < 2048) ) {
      utftext += String.fromCharCode((c >> 6) | 192);
      utftext += String.fromCharCode((c & 63) | 128);
    } else {
      utftext += String.fromCharCode((c >> 12) | 224);
      utftext += String.fromCharCode(((c >> 6) & 63) | 128);
      utftext += String.fromCharCode((c & 63) | 128);
    }
  }
  
  return utftext;
}


// ID로 child Element를 찾는다.
desyedit.util.getChildElementById = function( parent, childId )
{
  var nodes = parent.childNodes;
  if( nodes == null ) {
    return null;
  }
  for( var i = 0; i< nodes.length; i++ ) {
    if( nodes[i].getAttribute ) {
      if( nodes[i].getAttribute( "id" ) == childId ) {
        return nodes[i];
      }
    }
  }
  return null;
}

// 부모ID와 ID로 child Element를 찾는다.
desyedit.util.getChildElementByIdAndId = function( parentId, childId )
{
  var parent = document.getElementById( parentId );
  
  return desyedit.util.getChildElementById( parent, childId );
}

// tag 이름으로 태그의 값을 받는다.
desyedit.util.getValueByTagName = function( parent, tagName )
{
  var tag = parent.getElementsByTagName( tagName );
  if( tag.length == 0 ) {
    return tag.firstChild.nodeValue;
  } else {
    return tag.item( 0 ).firstChild.nodeValue;
  }
}

desyedit.util.printDebug = function( str, clear )
{
  var debug = document.getElementById( 'debug_window' );
  if( debug == null ) {
    debug = document.createElement( 'textarea' );
    debug.setAttribute( 'id', 'debug_window' );
    debug.setAttribute( 'rows', '60' );
    debug.setAttribute( 'cols', '80' );
    
    document.lastChild.appendChild( debug );
  }
  if( clear ) {
    debug.value = str;
  } else {
    debug.value += str;
  }
}

desyedit.util.trimString = function( str )
{
  str = str.replace( /(^\s*)|(\s*$)/g, "" );	// trim
  return str;
}