var stripe = function() {
	var even = true;
	var tables = document.getElementsByTagName("table");  
	for(var x=0;x!=tables.length;x++){
		var table = tables[x];
		if (! table) { return; }
		var tbodies = table.getElementsByTagName("tbody");
		for (var h = 0; h < tbodies.length; h++) {
		var trs = tbodies[h].getElementsByTagName("tr");
		even = 0;
		for (var i = 0; i < trs.length; i++) {
			if(even)
				trs[i].className += " even";
				even = !even;
				}
			}
		}
	}

window.onload = stripe;