// Code from http://www.alistapart.com/d/stripedtables/script.txt
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 = arguments[1] ? arguments[1] : "#fff";
 var oddColor = arguments[2] ? arguments[2] : "#eee";
 var table = document.getElementById(id);
 if (! table) { return; }
 var tbodies = table.getElementsByTagName("tbody");
 for (var h = 0; h < tbodies.length; h++) {
  var trs = tbodies[h].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;
  }
 }
}