<form action="login.do?act=login" method="post"> <input type="submit" name="submit1" value="登陆"> </form>
<form action="login.do?act=login" name="myform" method="post"> <input type="button" name="submit1" value="登陆" onclick="javascript:document.myform.submit();" > </form>
原文：http://www.cnblogs.com/EasonJim/p/6237782.html