<script type="text/javascript">
    function layerLogin(gourl) {
        if (0 < ey_getCookie('users_id')) {
            alert('已經登錄');
        }else{
            alert('請登錄！');
        }
    }
    function ey_getCookie(c_name)
    {
        return getCookie(c_name);
    }
    function getCookie(c_name)
    {
        if (document.cookie.length>0)
        {
            c_start = document.cookie.indexOf(c_name + "=")
            if (c_start!=-1)
            {
                c_start=c_start + c_name.length+1
                c_end=document.cookie.indexOf(";",c_start)
                if (c_end==-1) c_end=document.cookie.length
                return unescape(document.cookie.substring(c_start,c_end))
            }
        }
        return "";
    }
</script>