prova così:


codice:
<html>
<head>
charset=iso-8859-1">

<script language="JavaScript" type="text/JavaScript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
</head>

<body>
<form name="form1">
  <select name="menu1" onChange="MM_jumpMenu('parent',this,0)">
	<option selected>Scegli</option>
	<option value="http://www.html.it">html</option>
	<option value="http://www.ciccio.it">ciccio</option>
  </select>
</form>

</body>
</html>

ciaux