js，点击加号增加一行，点击减号删除一行
刚才问题可能不详细，重新发一次详细的，第一张图是原界面，以及它的代码，现在要在原型界面下新增加（第二张图）
第一张原界面图
原型界面代码：
<%@ page contentType="text/html;charset=UTF-8"%>
<%@ taglib uri="/WEB-INF/app.tld" prefix="app"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<html>
<head>
<jsp:include page="/common/StaticJavascript.jsp" />
<script type="text/javascript" src="/payment/common/PubJavaScript.js"></script>
<link href="/common/css/Standard.css" rel="stylesheet" type="text/css">
</head>
<body onLoad="initPage();">
<html:form action="/payment/processGpPOAMain.do">
<table class="common" cellpadding="1" cellspacing="1" align="center">
<tr class="top">
<td colspan="4">
<bean:message key="prompt.title.POAAccUpdate" />
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.PoaserialNo" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoPoaSerialNo" class="readonly" maxlength="26"
value="<bean:write name="gpPoaMainDto" property="poaSerialNo" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.PoaType" />
</td>
<td class="right">
<app:localeName name="gpPoaMainDto" property="poaType" codeType="poaType" />
<input type="hidden" name="gpPoaMainDtoPoaType"
value="<bean:write name="gpPoaMainDto" property="poaType" filter="true"/>">
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.OwnerCode" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoOwnerCode" class="readonly"
value="<bean:write name="gpPoaMainDto" property="ownerCode" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.Currency" />
</td>
<td class="right">
<bean:write name="gpPoaMainDto" property="currency"/>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.OwnerName" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoOwnerName" class="readonly"
value="<bean:write name="gpPoaMainDto" property="ownerName" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.OwnerAddress" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoOwnerAddress" class="common"
value="<bean:write name="gpPoaMainDto" property="ownerAddress" filter="true"/>">
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.OwnerMobilephone" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoOwnerMobilephone" class="common"
value="<bean:write name="gpPoaMainDto" property="ownerMobilephone" filter="true"/>">
</td>
<td class="left">
<bean:message key="GppoaMainDto.OwnerPhone" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoOwnerPhone" class="common"
value="<bean:write name="gpPoaMainDto" property="ownerPhone" filter="true"/>">
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.OwnerEmail" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoOwnerEmail" class="common"
value="<bean:write name="gpPoaMainDto" property="ownerEmail" filter="true"/>">
</td>
<td class="left">
<bean:message key="GppoaMainDto.SourceInd" />
</td>
<td class="right">
<app:localeName name="gpPoaMainDto" property="sourceInd" codeType="sourceInd" />
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.ValidInd" />
</td>
<td class="right">
<bean:write name="gpPoaMainDto" property="validInd" filter="true"/>
</td>
<td class="left">
<%--<bean:message key="GppoaMainDto.UnderWriteChannelTip"/>--%>
</td>
<td class="right">
<%--<bean:write name="gpPoaMainDto" property="accChannel" filter="true"/>--%>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.Amount" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoAmount" class="readonly"
value="<bean:write name="gpPoaMainDto" property="amount" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.CreditAmount" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoCreditAmount" class="readonly"
value="<bean:write name="gpPoaMainDto" property="creditAmount" filter="true"/>" readonly>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.EnabledAmount" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoEnabledAmount" class="readonly"
value="<bean:write name="gpPoaMainDto" property="enabledAmount" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.FreezeAmount" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoFreezeAmount" class="readonly"
value="<bean:write name="gpPoaMainDto" property="freezeAmount" filter="true"/>" readonly>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.CreatedBy" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoCreatedBy" class="readonly"
value="<bean:write name="gpPoaMainDto" property="createdBy" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.CreatedDate" />
</td>
<td class="right">
<input type="text" name="gpPoaTradeDtoCreatedDate" class="readonly"
value="<bean:write name="gpPoaMainDto" property="createdDate" filter="true"/>" readonly>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.UpdatedBy" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoUpdatedBy" class="readonly"
value="<bean:write name="gpPoaMainDto" property="createdBy" filter="true"/>" readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.UpdatedDate" />
</td>
<td class="right">
<input type="text" name="gpPoaTradeDtoUpdatedDate" class="readonly"
value="<bean:write name="gpPoaMainDto" property="updatedDate" filter="true"/>" readonly>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.PaymentComCode" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoPaymentComCode"
class="readonly"
value="<bean:write name="gpPoaMainDto" property="paymentComCode" filter="true"/>"
readonly>
</td>
<td class="left">
<bean:message key="GppoaMainDto.CenterCode" />
</td>
<td class="right">
<input type="text" name="gpPoaMainDtoCenterCode" class="readonly"
value="<bean:write name="gpPoaMainDto" property="centerCode" filter="true"/>"
readonly>
</td>
</tr>
<tr>
<td class="left">
<bean:message key="GppoaMainDto.Remark" />
</td>
<td class="right" colspan="3">
<textarea class="common" name="gpPoaMainDtoRemark" rows="3" cols="63" style="text-align:left"><bean:write name="gpPoaMainDto" property="remark" filter="true"/></textarea>
</td>
</tr>
</table>
<bean:parameter id="operateType" name="operateType" value="<bean:write name='operateType'>"/>
<table border="0" cellpadding="5" cellspacing="0" class="common">
<tr class="top">
<td colspan="4">
<bean:message key="prompt.title.BalanceRemind" />余额监控提醒
</td>
</tr>
<tr align="center">
<td class="white">
<input name="buttonQuery" type="button" class="button" onClick="updateAccount();" value="<bean:message key="button.save"/>" accesskey="s">
</td>
<td class="white">
<input name="buttonQuery" type="button" class="button" onClick="javascript:history.go(-1)" value="<bean:message key="button.backtrack"/>" accesskey="s">
</td>
</tr>
<tr>
<td colspan="2" class="white">
<iframe name=QueryResultFrame src='about:blank'
style='Z-INDEX: 1; WIDTH: 100%; HEIGHT: 410' marginwidth='0'
marginheight='0' hspace='0' vspace='0' frameborder='0'
scrolling='auto'>
</iframe>
</td>
</tr>
</table>
</html:form>
<app:codeInput />
<script language="javascript">
function updateAccount(){
fm.target="mainFrame";
fm.action="/payment/processGpPOAMain.do?actionType=updateAccount";
var message1 = "<bean:message key='prompt.common.sureSubmit'/>";
submitToNewWindow(message1);
}
</script>
</body>
</html>
第二张图：红框是要新增的
只不过 邮箱那块是样的“
所以只需要在原代码里加就可以了，我知道在哪儿加，但是不会写