<html>
<head>
<title></title>
<script type="text/javascript">
function redirectSite(){
var pole = document.getElementById('forma');
window.location = pole.value;
}
</script>
</head>
<body>
<form action="" method="post">
<select name="places" onchange="redirectSite();" id="forma">
<option value="pub.htm">Таверна</options>
<option value="adventure.htm">Работа</options>
</select>
</form>
</body>
</html>