function str_ireplace ( search, replace, subject ) {
    // Replaces all occurrences of search in haystack with replace / case-insensitive     
    var i, k = '';
    var searchl = 0;    var reg;
 
    var escapeRegex = function(s) {
        return s.replace(/([\\\^\$*+\[\]?{}.=!:(|)])/g, '\\$1');
    }; 
    //search += '';
    searchl = search.length;

    if (!(replace instanceof Array)) {
		
        replace = [replace];        
		
		if (search instanceof Array) {
			
            // If search is an array and replace is a string,
            // then this replacement string is used for every value of search
            while (searchl > replace.length) {
                replace[replace.length] = replace[0];            }
        }
    }
 
    /*if (!(search instanceof Array)) {        search = [search];
    }*/
	
    while (search.length>replace.length) {
        // If replace has fewer values than search,
        // then an empty string is used for the rest of replacement values        replace[replace.length] = '';
    }
 
    if (subject instanceof Array) {
		
        // If subject is an array, then the search and replace is performed        // with every entry of subject , and the return value is an array as well.
        for (k in subject) {
            if (subject.hasOwnProperty(k)) {
                subject[k] = str_ireplace(search, replace, subject[k]);
            }        }
        return subject;
    }
 
    searchl = search.length;   
	
	for (i = 0; i < searchl; i++) {
        reg = new RegExp(escapeRegex(search[i]), 'gi');
		
        subject = subject.replace(reg, replace[i]);
    }
     return subject;
}

//Modificado por MASMEDIOS para que funcione con acentos  21/05/2010

/*
 * This is the function that actually highlights a text string by
 * adding HTML tags before and after all occurrences of the search
 * term. You can pass your own tags if you'd like, or if the
 * highlightStartTag or highlightEndTag parameters are omitted or
 * are empty strings then the default <font> tags will be used.
 */
function doHighlight(bodyText, searchTerm, highlightStartTag, highlightEndTag) 
{
  // the highlightStartTag and highlightEndTag parameters are optional
  if ((!highlightStartTag) || (!highlightEndTag)) {
    highlightStartTag = "<font style='color:blue; background-color:yellow;'>";
    highlightEndTag = "</font>";
  }
  
  // find all occurences of the search term in the given text,
  // and add some "highlight" tags to them (we're not using a
  // regular expression search, because we want to filter out
  // matches that occur within HTML tags and script blocks, so
  // we have to do a little extra validation)
  var newText = "";
  var i = -1;
  var j = -1;
  var lcSearchTerm = searchTerm.toLowerCase();
  
  
  //busca = new Array("a","e","i","o","u");
  //reemplaza = new Array("([aàáâãäå])", "([eèéêë])", "([iìíîï])", "([oòóôõö])", "([uùúûü])");   
	
  //srchTerms = str_ireplace(busca,reemplaza, lcSearchTerm);
	sustitucionA=lcSearchTerm.replace(/[aàáâãäåAÀÁÂÃÄÅ]/g,"([aàáâãäåAÀÁÂÃÄÅ])");
	sustitucionE=sustitucionA.replace(/[eèéêëEÈÉÊË]/g,"([eèéêëEÈÉÊË])");
	sustitucionI=sustitucionE.replace(/[iìíîïIÌÍÎÏ]/g,"([iìíîïIÌÍÎÏ])");
	sustitucionO=sustitucionI.replace(/[oòóôõöOÒÓÔÕÖ]/g,"([oòóôõöOÒÓÔÕÖ])");
	sustitucionU=sustitucionO.replace(/[uùúûüUÙÚÛÜ]/g,"([uùúûüUÙÚÛÜ])");
	srchTerms=sustitucionU;
	
	
  reg = new RegExp(srchTerms,"gi");	
  	
  var lcBodyText = bodyText.toLowerCase();
    
  while (bodyText.length > 0) {	
	
	if(j<0){
		i = lcBodyText.search(reg);
		j=i;
	} else {			
		i = lcBodyText_reg.indexOf(lcSearchTerm);
		if(i>0){			
			i=i+j+searchTerm.length;	
			j=i;			
		}
	}
	

    if (i < 0) {	  
      newText += bodyText;
      bodyText = "";
    } else {	  		
      // skip anything inside an HTML tag
      if (bodyText.lastIndexOf(">", i) >= bodyText.lastIndexOf("<", i)) {	
        // skip anything inside a <script> block
        if (lcBodyText.lastIndexOf("/script>", i) >= lcBodyText.lastIndexOf("<script", i)) {		  
          newText += bodyText.substring(0, i) + highlightStartTag + bodyText.substr(i, searchTerm.length) + highlightEndTag;
          bodyText = bodyText.substr(i + searchTerm.length);
		  
		  
          lcBodyText = bodyText.toLowerCase();
		  lcBodyText_reg = bodyText.toLowerCase();		 
		  j = -1;
          i = -1;
        }		
		
      }	  
	  lcBodyText_reg = bodyText.substring(j + searchTerm.length).toLowerCase();
    }
	
  }
    
  return newText;
}


/*
 * This is sort of a wrapper function to the doHighlight function.
 * It takes the searchText that you pass, optionally splits it into
 * separate words, and transforms the text on the current web page.
 * Only the "searchText" parameter is required; all other parameters
 * are optional and can be omitted.
 */
function highlightSearchTerms(searchText, treatAsPhrase, warnOnFailure, highlightStartTag, highlightEndTag)
{
  // if the treatAsPhrase parameter is true, then we should search for 
  // the entire phrase that was entered; otherwise, we will split the
  // search string so that each word is searched for and highlighted
  // individually
  if(searchText.length == 0){
	alert("No se ha introducido ningún término");
	return true;
  }
  if(searchText.length > 1){
  if (treatAsPhrase) {
    searchArray = [searchText];
  } else {
    searchArray = searchText.split(" ");
  }
  
  if (!document.body || typeof(document.body.innerHTML) == "undefined") {
    if (warnOnFailure) {
      alert("Sorry, for some reason the text of this page is unavailable. Searching will not work.");
    }
    return false;
  }
  
  //var bodyText = document.body.innerHTML;
  //var bodyText = document.body.innerHTML;
  var bodyText = document.getElementById('boldocv').contentWindow.document.body.innerHTML;
  for (var i = 0; i < searchArray.length; i++) {
    bodyText = doHighlight(bodyText, searchArray[i], highlightStartTag, highlightEndTag);
  }
  
  //document.body.innerHTML = bodyText;
  document.getElementById('display').innerHTML = bodyText;
  //document.getElementById('display').contentWindow.document.body.innerHTML = bodyText;
  //dw_displayExternal();
  } else {
	alert("El termino a buscar no puede tener una letra");
  }
  return true;
}


/*
 * This displays a dialog box that allows a user to enter their own
 * search terms to highlight on the page, and then passes the search
 * text or phrase to the highlightSearchTerms function. All parameters
 * are optional.
 */
function searchPrompt(defaultText, treatAsPhrase, textColor, bgColor)
{
  // This function prompts the user for any words that should
  // be highlighted on this web page
  if (!defaultText) {
    defaultText = "";
  }
  
  // we can optionally use our own highlight tag values
  if ((!textColor) || (!bgColor)) {
    highlightStartTag = "";
    highlightEndTag = "";
  } else {
    highlightStartTag = "<font style='color:" + textColor + "; background-color:" + bgColor + ";'>";
    highlightEndTag = "</font>";
  }
  
  if (treatAsPhrase) {
    promptText = "Please enter the phrase you'd like to search for:";
  } else {
    promptText = "Please enter the words you'd like to search for, separated by spaces:";
  }
  
  searchText = prompt(promptText, defaultText);

  if (!searchText)  {
    alert("No search terms were entered. Exiting function.");
    return false;
  }
  
  return highlightSearchTerms(searchText, treatAsPhrase, true, highlightStartTag, highlightEndTag);
}


/*
 * This function takes a referer/referrer string and parses it
 * to determine if it contains any search terms. If it does, the
 * search terms are passed to the highlightSearchTerms function
 * so they can be highlighted on the current page.
 */
function highlightGoogleSearchTerms(referrer)
{
  // This function has only been very lightly tested against
  // typical Google search URLs. If you wanted the Google search
  // terms to be automatically highlighted on a page, you could
  // call the function in the onload event of your <body> tag, 
  // like this:
  //   <body onload='highlightGoogleSearchTerms(document.referrer);'>
  
  //var referrer = document.referrer;
  if (!referrer) {
    return false;
  }
  
  var queryPrefix = "q=";
  var startPos = referrer.toLowerCase().indexOf(queryPrefix);
  if ((startPos < 0) || (startPos + queryPrefix.length == referrer.length)) {
    return false;
  }
  
  var endPos = referrer.indexOf("&", startPos);
  if (endPos < 0) {
    endPos = referrer.length;
  }
  
  var queryString = referrer.substring(startPos + queryPrefix.length, endPos);
  // fix the space characters
  queryString = queryString.replace(/%20/gi, " ");
  queryString = queryString.replace(/\+/gi, " ");
  // remove the quotes (if you're really creative, you could search for the
  // terms within the quotes as phrases, and everything else as single terms)
  queryString = queryString.replace(/%22/gi, "");
  queryString = queryString.replace(/\"/gi, "");
  
  return highlightSearchTerms(queryString, false);
}


/*
 * This function is just an easy way to test the highlightGoogleSearchTerms
 * function.
 */
function testHighlightGoogleSearchTerms()
{
  var referrerString = "http://www.google.com/search?q=javascript%20highlight&start=0";
  referrerString = prompt("Test the following referrer string:", referrerString);
  return highlightGoogleSearchTerms(referrerString);
}