function initXmlHttp() {
	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
    return new XMLHttpRequest();
	} 
	else if (window.ActiveXObject) { // IE
    return new ActiveXObject("Microsoft.XMLHTTP");
	}
}
 
  function check_login(username,password)
{		
		oBao=initXmlHttp();
		oBao.open("POST","/bbs/home_login.asp?username="+username+"&password="+password+"&chkbbk=bbktel&action=chk",false);
		oBao.send(null);
		check_flag = unescape(oBao.responseText);
		//if(check_flag=="ok=1"){
		if(check_flag=="index.asp@@@@1"){
			return true;	
		}
		else if(check_flag=="ok=6"){
			alert("密码错误！");
			return false;	
		}
		else if(check_flag=="ok=5"){
			alert("没有该用户名！");
			return false;	
		}else{
			alert("登录失败请重试！");
			return false;
		}	
}
 
 function do_login(username,password)
{		
		var user=username;
		var pw=password;
		if (check_login(user,pw)){
		document.getElementById("DV_getcode").src="bbs/DV_getcode.asp";
		oBao=initXmlHttp();
		//document.write("dl_deal.asp?username="+username+"&password="+password);
		oBao.open("POST","dl_deal.asp?username="+username+"&password="+password,false);
		oBao.send(null);
		check_flag = unescape(oBao.responseText);
		//alert(check_flag);
		window.location.reload(true);
		}
}
 function do_logout()
{
		oBao=initXmlHttp();
		oBao.open("POST","bbs/logout.asp",false);
		oBao.send(null);
		check_flag = unescape(oBao.responseText);
		//alert(check_flag);
		window.location.reload(true);
		//window.location.href="/";
}