// JavaScript Document
function Login(){
	var username = document.getElementById('username').value;
	var password = document.getElementById('password').value;
	var vcode    = document.getElementById('vcode').value;
	var url = 'entrance.php?c=Upload&a=check&username='+username+'&password='+password+'&vcode='+vcode;
	sendAjax(url);
	return false;

}

function bbsLogin(){
	var username = document.getElementById('username').value;
	var password = document.getElementById('password').value;
	var vcode    = document.getElementById('vcode').value;
	var url = 'entrance.php?c=Upload&a=check&username='+username+'&password='+password+'&vcode='+vcode;
	bbsSend(url);
	return false;

}
function sendAjax(url){
	if (window.ActiveXObject)
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP")
	else if(window.XMLHttpRequest)
		xmlHttp=new XMLHttpRequest();		
	xmlHttp.onreadystatechange=processRequest;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
	function processRequest(){
		if(xmlHttp.readyState==4){
			if(xmlHttp.status==200){
				if(xmlHttp.responseText=="null")
					alert('用户名,密码,验证码不能为空!');
				else if(xmlHttp.responseText=="vcodeerror")
					alert('验证码错误,请重新输入验证码!');
				else if(xmlHttp.responseText=="error")
					alert('用户名,密码错误!');
				else if(xmlHttp.responseText=="enter")
					location.href='entrance.php?c=Upload';
				else
					alert('系统错误,请重试!');
			}else
				alert('Ajax Error');			
		}
	}
}

function bbsSend(url){
	if (window.ActiveXObject)
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP")
	else if(window.XMLHttpRequest)
		xmlHttp=new XMLHttpRequest();		
	xmlHttp.onreadystatechange=processRequest;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
	function processRequest(){
		if(xmlHttp.readyState==4){
			if(xmlHttp.status==200){
				if(xmlHttp.responseText=="null")
					alert('用户名,密码,验证码不能为空!');
				else if(xmlHttp.responseText=="vcodeerror")
					alert('验证码错误,请重新输入验证码!');
				else if(xmlHttp.responseText=="error")
					alert('用户名,密码错误!');
				else if(xmlHttp.responseText=="enter")
					location.href='entrance.php?c=UserBBS';
				else
					alert('系统错误,请重试!');
			}else
				alert('Ajax Error');			
		}
	}
}