function highlightSearchTerms(bodyText,  searchText, treatAsPhrase)
{
  // 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.indexOf('"') >= 0)
  {
    searchArray = [searchText];
  }
  else
  {
    searchArray = searchText.split(" ");
  }
  newText = '';
  for (i=0; i < searchText.length; i++)
  {
  	if (searchText[i] != '"')
	{
		newText += searchText[i];
	}
  }
  searchText = newText.replace('"','');
  searchArray = newText.split(" ");
  
  for (var i = 0; i < searchArray.length; i++)
  {
  	if (searchArray[i] != "")
	{
		bodyText = doHighlight(bodyText, searchArray[i]);
	}
    
  }
  return bodyText
}

function doHighlight(bodyText, searchTerm) 
{
    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 lcSearchTerm = searchTerm.toLowerCase();
  var lcBodyText = bodyText.toLowerCase();
    
  while (bodyText.length > 0) {
    i = lcBodyText.indexOf(lcSearchTerm, i+1);
    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();
          i = -1;
        }
      }
    }
  }
  return newText;
}