function TopLogin(){
  var uname = $('uname').value;
  var pwd = $('pwd').value;
  if(uname=='') {alert('会员名不能为空');return};
  if(pwd=='') {alert('密码不能为空');return};
  var url = '/web/member.asmx/Login';
  var pars = 'loginName=' +uname+ '&password='+pwd;
  var myAjax = new Ajax.Request(url,{method: 'post',parameters: pars,onSuccess: SubmitSuccess}); 
}
function SubmitSuccess(originalRequest){
  var Result = originalRequest.responseText;
  var regExp = />([{][^<]{0,}[}])</;
  regExp.exec(Result);
  Result = RegExp.$1;
  var Json = Result.evalJSON();
  if(Json.Success){
    location.reload();
  }else{
   alert(Json.Info);
  }
}
function EntryDown(e){
 var KeyCode;
 try{
　 KeyCode = e.which;
 }catch(e){
 　 KeyCode = event.keyCode;
 }
 if(13==KeyCode) TopLogin();
}