ecshop ajax无刷新登陆

<!-- 正文开始 -->
< !--{if $user_info}-->

<div class="lef_tit_bj">会员登陆</div>
< div class="left_conn_bj">
< table width="100%" border="0" cellspacing="0" cellpadding="0">
< tr>
< td height="50" align="center" valign="middle"><label><strong>Hello {$user_info.username}</strong></label></td>
< /tr>
< tr>
< td height="30" align="center" valign="middle"><strong>欢迎光临本店</strong></td>
< /tr>
< tr>
< td height="40" align="center" valign="bottom"><label>
< a href="user.php?act=logout"> <img src="../images/tuichu.gif"></a>
& nbsp;
< a href="user.php"> <img src="../images/jinrultan.gif"></a>
< /label></td>
< /tr>
< /table>
< /div>
< /div>

< !--{else}-->

<div class="lef_tit_bj">会员登录</div>
< div class="left_conn_bj">

< form id="ECS_LOGINFORM" name="ECS_LOGINFORM" method="post" action="javascript:signIn()">
< table width="100%" border="0" cellspacing="0" cellpadding="0">
< tr>
< td height="50" align="right" valign="middle">用户名：</td>
< td height="50" align="left" valign="middle"><label>
< input type="text" name="username" class="yonhu_input" style="height:15px;"/>
< /label></td>
< /tr>
< tr>
< td height="30" align="right" valign="middle"> 密&nbsp; 码：</td>
< td height="30" align="left" valign="middle"><input type="password" name="password" class="yonhu_input" style="height:15px;" /></td>
< /tr>
< tr>
< td height="40" colspan="2" align="center" valign="bottom"><label>
< input type="image" name="imageField" src="images/denglu_bann.jpg" />
& nbsp;
< a href="user.php?act=register"><img src="images/zhuce_bann.jpg" border="0" /></a>
< /label></td>
< /tr>
< /table>
< /form>
< /div>
< /div>
< !--{/if}-->
{literal}
< script type="text/javascript">
function signIn()
{
var frm = document.forms['ECS_LOGINFORM'];

if (frm)
{
var username = frm.elements['username'].value;
var password = frm.elements['password'].value;
var captcha = '';
if (frm.elements['captcha'])
{
captcha = frm.elements['captcha'].value;
}

if (username.length == 0 || password.length == 0)
{
{/literal}
alert("{$lang.empty_username_password}");
{literal}
return;
}
else
{
Ajax.call('user.php?act=signin', 'username=' + username + '&password=' + encodeURIComponent(password) + '&captcha=' + captcha, signinResponse, "POST", "TEXT");
}
}
else
{
alert('Template error!');
}
}

function signinResponse(result)
{
var userName = document.forms['ECS_LOGINFORM'].elements['username'].value;
var mzone = document.getElementByIdx_xx_x("ECS_MEMBERZONE");
var res = result.parseJSON();

if (res.error > 0)
{
alert(res.content);
if(res.html)
{
mzone.innerHTML = res.html;
document.forms['ECS_LOGINFORM'].elements['username'].value = userName;
}
}
else
{
if (mzone)
{
mzone.innerHTML = res.content;
evalscript(res.ucdata);
//alert(res.ucdata);
}
else
{
window.location.reload()
}
}
}
< /script>

{/literal}