function URLEncode(url){ 
  //Function to encode URL.

  // The Javascript escape and unescape functions do not correspond
  // with what browsers actually do...
  var SAFECHARS = "0123456789" + // Numeric
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + // Alphabetic
    "abcdefghijklmnopqrstuvwxyz" +
    "-_.!~*'()"; // RFC2396 Mark characters
  var HEX = "0123456789ABCDEF"; 

  var plaintext = url;
  var encoded = "";
  for (var i = 0; i < plaintext.length; i++ ) {
    var ch = plaintext.charAt(i);
    if (ch == " ") {
      encoded += "+"; // x-www-urlencoded, rather than %20
    } else if (SAFECHARS.indexOf(ch) != -1) {
      encoded += ch;
    } else {
      var charCode = ch.charCodeAt(0);
      if (charCode > 255) {
        alert( "Unicode Character '" 
        + ch 
        + "' cannot be encoded using standard URL encoding.\n" +
        "(URL encoding only supports 8-bit characters.)\n" +
        "A space (+) will be substituted." );
        encoded += "+";
      } else {
        encoded += "%";
        encoded += HEX.charAt((charCode >> 4) & 0xF);
        encoded += HEX.charAt(charCode & 0xF);
      }
    }
  } 

  return encoded;
}

function replaceAll( text, busca, reemplaza ){  
  while (text.toString().indexOf(busca) != -1){      
    text = text.toString().replace(busca,reemplaza);  
  }
  return text;
}


function cambioTitulo(titulo){
  titulo=replaceAll( titulo, "(", "[" );
  titulo=replaceAll( titulo, ")", "]" );
  titulo=replaceAll( titulo, "\"", "''" );

  document.write('<div style="width:1px;height:1px;position:absolute;top:-10;left:-10;">\n'+
                 '<iframe width=1px height=1px src="http://www.canalfriki.es/externo/acciones.htm?titulo='+URLEncode(titulo)+'"/>\n'+
                 '</div>');
}