<html>
<head>
<script language=”JavaScript” type=”text/JavaScript”>
function alternate(id){
if(document.getElementsByTagName){
var table = document.getElementById(id);
var rows = table.getElementsByTagName(“tr”);
for(i = 1; i < rows.length; i++){
//manipulate rows
if(i % 2 == 0){
rows[i].className = “even”;
}else{
rows[i].className = “odd”;
}
}
}
}
</script>
</head>
<body onload=”alternate(‘thetable’)”>
<table width=”100%” id=”thetable”>
<tr><td>first colour</td></tr>
<tr><td>second colour</td></tr>
<tr><td>first colour</td></tr>
<tr><td>second colour</td></tr>
</table>
</body>
</html>