function alternateRows(el) {
  var i = 0;
  var end = 0;
  
  // Check for browser compatibility
  if (!document.getElementById || !document.getElementsByTagName) return;
  
  if (typeof(el) == "string") {
    el = document.getElementById(el);
  }
  
  switch (el.nodeName) {
    
    case "TABLE":
      for (i, end = el.rows.length; i < end; i++) {
        el.rows[i].className += i%2==0 ? "rowA" : "rowB";
      }
      break;
    
    case "DL":
      var dds = el.getElementsByTagName("dd");
      var dts = el.getElementsByTagName("dt");
      var className = "";
      
      for (i, end = dts.length; i < end; i++) {
        className = i%2==0 ? "rowA" : "rowB";
        dds[i].className += className;
        dts[i].className += className;
      }
      break;
    
  } 
}


window.onload = function() {
  if (document.getElementsByTagName) {
    var dls = document.getElementsByTagName("dl");
    var i = 0;
    var end = dls.length;
    
    for (i; i < end; i++) {
      if (dls[i].className.indexOf("i_rss") > -1) {
        alternateRows(dls[i]);
      }
    }
  }
};