function hasClass(obj) {
     var result = false;
     if (obj.getAttributeNode("class") != null) {
         result = obj.getAttributeNode("class").value;
     }
     return result;
  }   

 function stripe(id) {
    var even = false;
    var evenColor = "white";
    var oddColor = "#f5f3f1";
  
    var table = document.getElementById(id);
   
    var tbodies = table.getElementsByTagName("tbody");
    for (var j = 0; j < tbodies.length; j++) {
      var trs = tbodies[j].getElementsByTagName("tr");
      for (var i = 0; i < trs.length; i++) {
      if (!hasClass(trs[i]) && ! trs[i].style.backgroundColor) {
          var tds = trs[i].getElementsByTagName("td");
          for (var j = 0; j < tds.length; j++) {
            var mytd = tds[j];
          if (! hasClass(mytd) && ! mytd.style.backgroundColor) {
          mytd.style.backgroundColor = even ? evenColor : oddColor;
            }
          }
        }
        even =  ! even;
      }
    }
  }