下拉菜单跳转页面
<script language="javascript">
function sub(sum){
document.form1.action="manage.jsp?page="+sum;
document.form1.submit();
}
</script>
<html>
<head>
<title>My JSP 'manage.jsp' starting page</title>
</head>
<body>
<form action="" method="post" id="form1" name="form1">
<table width="800" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td>
<select name="which" id="which" onchange="sub(this.options[this.selectedIndex].value);">
<option value="1" >1</option>
<option value="2" >2</option>
<option value="3" selected>3</option>
<option value="4" >4</option>
</select>
</td>
</tr>
</table>
</form>
</body>
</html>