登陆界面json方法 ajax请求，时间戳验证码、cookie记住密码、登陆判断

      < form action = "" method = "post" name = "loginForm"

                    id = "loginForm" >

                    < div class = "control-group normal_text" >

                         < h3 >

                              < a href = "index.do" >< img src = "static/login/logo.png" alt = "Logo" /></ a >

                         </ h3 >

                    </ div >

                    < div class = "control-group" >

                         < div class = "controls" >

                              < div class = "main_input_box" >

                                   < span class = "add-on bg_lg" >

                                   < i >< img height = "37" src = "static/login/user.png" /></ i >

                                   </ span >< input type = "text" name = "loginname" id = "loginname" value = "" placeholder = "请输入用户名" />

                              </ div >

                         </ div >

                    </ div >

                    < div class = "control-group" >

                         < div class = "controls" >

                              < div class = "main_input_box" >

                                   < span class = "add-on bg_ly" >

                                   < i >< img height = "37" src = "static/login/suo.png" /></ i >

                                   </ span >< input type = "password" name = "password" id = "password" placeholder = "请输入密码" value = "" />

                              </ div >

                         </ div >

                    </ div >

                    < div style =" float : right ; padding-right : 10% ;" >

                         < div style =" float : left ; margin-top : 3px ; margin-right : 2px ;" >

                              < font color = "white" > 记住密码 </ font >

                         </ div >

                         < div style =" float : left ;" >

                              < input name = "form-field-checkbox" id =