function login()
{ 
    var url = 'ajax.aspx';
    var un = $('un').value;
    var pw = $('pw').value;
    if(un==''||pw=='')
    {
        show('pop','用户名密码不能为空！');
    }
    else
    {
        var pars = 'cmd=login&un='+un+'&pw='+pw;    
        var myAjax = new Ajax.Request(url,{method: 'post',parameters: pars,onLoading:loading(), onComplete: showLogin});
    }

}

function loading()
{
    $('login').style.height='100px';
    $('login').innerHTML = "正在登陆...";
    $('nologin').style.display="none";
    $('login').style.display='block';        
    $('un').value= "";
    $('pw').value="";
}

function showLogin(originalRequest)
{
    var strResult = originalRequest.responseText;
    
    if(strResult!="false14")
    {
        $('login').innerHTML = strResult;
        $('nologin').style.display="none";
        $('login').style.display='block';        
        $('un').value= "";
        $('pw').value="";
    }
    else
    {
        $('nologin').style.display="block";
        $('login').style.display='none';
        show('pop','对不起，用户名密码不正确！');
        
    }
}
function islogin1()
{
    var url = 'ajax.aspx';
    var pars = 'cmd=islogin';
    var myAjax = new Ajax.Request(url,{method: 'post',parameters: pars, onComplete: showIsLogin});
}
function showIsLogin(originalRequest)
{
    var strResult = originalRequest.responseText;

    if(strResult!="false15")
    {
        $('login').innerHTML = strResult;
        $('nologin').style.display="none";
        $('login').style.display='block';
    }
    else
    {
        $('nologin').style.display="block";
        $('login').style.display='none';
    }
}
function loginout()
{
    var url = 'ajax.aspx';
    var pars = 'cmd=out';
    var myAjax = new Ajax.Request(url,{method: 'post',parameters: pars, onComplete: showout});
}
function showout(originalRequest)
{
    var strResult = originalRequest.responseText;
    {
        $('nologin').style.display="block";
        $('login').style.display='none';
    }
}