使用脚本使一个form可以有多个普通按钮

<script>
funtion changeAction1()
{
document.getElementById("xxx").action = "zzz";
}
funtion changeAction2()
{
document.getElementById("xxx").action = "hhh";
}
</script>

<form id="xxx" action="yyy">
<input type="button" onclick="changeAction1()"/>
<input type="button" onclick="changeAction2()"/>
</form>