如何实现表单提交后不重新刷新当前页面
<form name='form1' id='form1' action='/xbcw/cw/xx_xx.action' method='post'><input type="button" id="btnSubmit" name="btnSubmit" value="保存" onclick="addKp()" style="width:60px;" /><input type="button" id="btnSubmit" name="btnSubmit" value="下一步" onclick="doAddCwKpSubmit()" style="width:60px;" /></form>
<iframe style="display: none" id="rfFrame" name="rfFrame" src="about:blank"></iframe>
document.forms[0].target="rfFrame";