function check(li)
    {
      string = li.innerHTML;
          
      var result;
      var reg = new RegExp("<a .*>[ ]*<span>.*</span>[ ]*</a>", "i");
      if (!reg.test(string))
      {
        reg = new RegExp("<a .+>[ ]*.*[ ]*</a>", "i");
        letters = (reg.exec(string)+"").length;
        reg = new RegExp("<a .+[\"\']>", "i");
        result = reg.exec(string);
        result += "<span>";
        reg = new RegExp(">.*</a>", "i");
        var pom = reg.exec(string)+"";
        pom = pom.substr(1, pom.length-5);
        result += pom+"</span></a>";
        reg = new RegExp("</a>.*", "i");
        pom = reg.exec(string)+"";
        pom = pom.substr(4);
        result += pom+string.substr(letters);

        li.innerHTML = result;
      }
    }