// File: zebratable.js
// *****************************************************************************************
// Originally written by David F. Miller; published 3/5/2004 in A List Apart:
// http://www.alistapart.com/articles/zebratables/
// Modified by Conrad Matiuk, INDUS Corporation; 8/15/2004 - to accept text color arguments
// *****************************************************************************************
// this function is need 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;
}   
// end hasClass() function

function stripe(id) {
// the flag used to keep track of whether the current row is odd or even
	var even = false;
// if arguments are provided to specify the background and text colors of the even & odd rows, use them;
// otherwise use the following defaults:
	var evenColor = arguments[1] ? arguments[1] : "#fff";
	var oddColor = arguments[2] ? arguments[2] : "#ccc";
	var evenText = arguments[3] ? arguments[3] : "#000";
	var oddText = arguments[4] ? arguments[4] : "navy";
// obtain a reference to the desired table if no such table exists, abort
	var table = document.getElementById(id);
	if (! table) { return; }
// by definition, tables can have more than one tbody
// element, so we'll have to get the list of child
	var tbodies = table.getElementsByTagName("tbody");
// and loop through them...
	for (var h = 0; h < tbodies.length; h++) {
// find all the &lt;tr&gt; elements... 
	var trs = tbodies[h].getElementsByTagName("tr");
// ... and loop through them
	for (var i = 0; i < trs.length; i++) {
// avoid rows that have a class attribute or backgroundColor style
	if (!hasClass(trs[i]) && ! trs[i].style.backgroundColor) {
// get all the cells in this row...
	var tds = trs[i].getElementsByTagName("td");
// and iterate through them...
	for (var j = 0; j < tds.length; j++) {
	var mytd = tds[j];
// avoid cells that have a class attribute or backgroundColor style
	if (! hasClass(mytd) && ! mytd.style.backgroundColor) {
		mytd.style.backgroundColor = even ? evenColor : oddColor;
		mytd.style.color = even ? evenText : oddText;
            }
          }
        }
// flip from odd to even, or vice-versa
	even =  ! even;
      }
    }
  }
// end stripe() function
// zebratable.js end script