function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function addClass(element, value) {
	if(!element.className) {
		element.className = value;
	} else {
		newClassName = element.className;
		newClassName += " ";
		newClassName += value;
		element.className = newClassName;
	}
}


function stripeTables() {
	if (!document.getElementsByTagName) return false;
	var tables = document.getElementsByTagName("table");
	for (var i=0;i<tables.length;i++) {
		var odd = false;
		var rows = tables[i].getElementsByTagName("tr");
		for (var j=0;j<rows.length;j++) {
			if(odd) {
				addClass(rows[j], "odd");
				odd = !odd;
			} else {
				odd = !odd;
			}
		}
	}
}

addLoadEvent(stripeTables);