var debug = true;
var SuccessMsg = "保存成功!";
var FailtureMsg = "通讯失败!";
var LoadingMsg = '正在登录...';
var tmp='';
function checkUserLogin(){
	var url = "ajax.php?op=autologin";
		
		new Ajax.Request(url, {
		onSuccess:function(request)
		{
			var __msg = getTipText(request);
			if(__msg!=''){
				$('logindiv').innerHTML = __msg;
			}else{
				$('login').style.display='';
			}
		},
		onFailure:function(request){
			alert(FailtureMsg);
		}
	});
}
function checkLoginForm(){
	var form = window.document.getElementById('loginForm');
	var regex= /^[a-zA-Z0-9]{1,8}/;
	if($('login_username').value==''){
		alert('请输入用户名！');
		$('login_username').focus();
		return false;
	}	
	if($('login_userpassword').value==''){
		alert('请输入密码！');
		$('login_userpassword').focus();
		return false;
	}
	
	AjaxUpdate('loginForm',"ajax.php");


}
function AjaxUpdate(fromName,url)
{
	new Ajax.Request(url, {
		parameters:Form.serialize(fromName),
		onFailure:function(request){
			alert(FailtureMsg);
		},
		onLoading:function(){
			$('logindiv').style.display = '';
			tmp = $('logindiv').innerHTML;
			$('logindiv').innerHTML = LoadingMsg ;
			
		},
		onSuccess:function(request)
		{
			
			var __msg = getTipText(request);
			var tip = __msg.substr(0,5);
			var tip_msg = __msg.substr(6,__msg.length);
			
			if(tip=='error'){
				alert(tip_msg);
				$('logindiv').innerHTML = tmp;
			}else{
				$('logindiv').innerHTML = __msg;
			}
		}

	});


}
function getTipText(request)
{
	if (debug)
	{
		return request.responseText;
	}else
	{
		return SuccessMsg;
	}
}