function doSearch() {
      mensaje = '';
      querySearch='';
      querySearch =  trim(formSearch.q.value);
      if ((querySearch == '') || (querySearch == '<xsl:value-of select="/language/header/search-text"/>')) {
        mensaje += '<xsl:value-of select="/language/header/search-error"/>';
      }
      if (mensaje == '') {
        var linkID = "LinkTrack_Search_";
        var menu = getCookie('menu');
      if (menu==null || menu=="")
        linkID += "O";
      else
        linkID += menu;
        setLinkCookie(linkID);
        return true;
      }
      else
      {
        mensaje = mensaje;
        alert(mensaje);
        return false;
      }
    }

    function trim(s)
    {
      // Remove leading spaces and carriage returns
      while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
      {
        s = s.substring(1,s.length);
      }
      // Remove trailing spaces and carriage returns
      while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
      {
        s = s.substring(0,s.length-1);
      }
      return s;
    }