function PathInfStr(s)
{
  var sRtn="";
  var sChk="";
  for(var i=0;i<s.length;i++)
  {
    sChk = s.substr(i,1);
    if (sChk == "(")
      sChk = "$Lf";
    else if (sChk == ")")
      sChk = "$Rt";
    else if (sChk == "=")
      sChk = "$Eq";
    else if (sChk == ">")
      sChk = "$Gr";
    else if (sChk == "<")
      sChk = "$Ls";
    sRtn = sRtn + sChk;
  }
  return sRtn;
}