// show user login
function showLogin()
{
	$('show_login').style.display='block';
	$('_body').style.cssText='position:absolute;z-index:2;width:1008px;@height:764px;height:775px !important;@right:0;background-color:#cccccc;opacity:0.5;filter:alpha(opacity=50);margin:0;';
}
// if chick close
function closeAction()
{
	$('show_login').style.display='none';
	$('_body').style.cssText='';
}

// user ajax check user login
function checkLogin(name)
{
	var obj = $(name);
	var val = obj.value;
	var ajax = new Ajax('state_id','HTML');
	var passwd = $("passwd").value;
	var username = $("username").value;
	if(name == 'passwd')
	{
		var urls='checklogin.php?&name='+encodeURIComponent(name)+'&value='+encodeURIComponent(passwd)+'&username='+encodeURIComponent(username);
	}
	else
	{
		var urls='checklogin.php?&name='+encodeURIComponent(name)+'&value='+encodeURIComponent(val);
	}
	// 使用encodeURIComponent()对URL进行编码
	switch (name)
	{
		case "username":
		var callback=caller0;
		break;
		case "passwd":
		var callback=caller1;
		break;
		case "code":
		var callback=caller2;
		break;
	}
	ajax.get(urls,callback);
}
function caller0(s)
{
	$('errMsg').innerHTML=s;
}
function caller1(s)
{
	$('errMsg').innerHTML=s;
}
function caller2(s)
{
	$('errMsg').innerHTML=s;
}