<!doctype html public "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<script type="text/javascript" >
function send()
{
var link = document.form.list.options[document.form.list.selectedIndex].value;
if ( link != '' ) {
window.location = link;
}
}
</script>
</head>
<body >
<form name="form" >
<select name="list" onchange="send()" >
<option > selection </option>
<option value="http://www.yahoo.com" > yahoo</option>
<option value="http://www.google.com" > google </option>
</select>
</form>
</body>
</html>