//Remove leading and trailing spaces from a string
  function trimString(val)	//convert numeric string to trimed numeric
  {
    var valu = val;
 
    valu = rtrimString(valu);				//trim leading spaces
    valu = ltrimString(valu);				//trim trailing spaces
    return valu;							//return trimed variable
  }
  function rtrimString(val)				//remove leading spaces
  {
    var valu = val;
    while (valu.charAt(valu.length - 1) == " ")		//trim all trailing spaces
    {
      valu = valu.substr(0,valu.length - 1);		//trim a trailing space
    }
  return valu;
  }
  function ltrimString(val)				//remove leading spaces
  {
    var valu = val;
    while (valu.charAt(0) == " ")			//trim all leading spaces
    {
      valu = valu.substr(1);				//trim leading space
    }
    return valu;
  }