// this function is needed to work around 
  // a bug in IE related to element attributes
  function hasClass(obj) {
     var result = false;
     if (obj.getAttributeNode("class") != null) {
         result = obj.getAttributeNode("class").value;
     }
     return result;
  }   

 function stripe(id) {

    // the flag we'll use to keep track of 
    // whether the current row is odd or even
    var even = false;
  
    // if arguments are provided to specify the colours
    // of the even & odd rows, then use the them;
    // otherwise use the following defaults:
    var evenColor = arguments[1] ? arguments[1] : "#fff";
    var oddColor = arguments[2] ? arguments[2] : "#eee";
  
    // obtain a reference to the desired table
    // if no such table exists, abort
    var lister = document.getElementById(id);
    if (! lister) { return; }
    
    // by definition, tables can have more than one tbody
    // element, so we'll have to get the list of child
    // <tbody>s 
    var lis = lister.getElementsByTagName("tr");
      
      // ... and iterate through them
      for (var i = 0; i < lis.length; i++) {

        // avoid rows that have a class attribute
        // or backgroundColor style
        if (! hasClass(lis[i]) &&
            ! lis[i].style.backgroundColor) {
			        
            var myli = lis[i];

            // avoid cells that have a class attribute
            // or backgroundColor style
            if (! hasClass(myli) &&
                ! myli.style.backgroundColor) {
        
              myli.style.backgroundColor =
                even ? evenColor : oddColor;
            
            }
        }
        // flip from odd to even, or vice-versa
        even =  ! even;
      }
  }