function checkNull(){
	//alert(document.getElementById("account"));
	if (document.getElementById("account").value==""){
		alert("用户名不能为空");
		$("account").focus();
		return "false";
	}
	else if(document.getElementById("password").value==""){
		alert("密码不能为空");
		$("password").focus();
		return "false";
	}
}

//登陆
function ajaxLogin(idTag){
var flag= checkNull();
if (flag=="false")
{
	return false;
}
var url = "/ajaxHtml/ajaxLogin.asp";
var pars = "account="+document.getElementById("account").value+"&password="+document.getElementById("password").value;
var myAjax = new Ajax.Updater(
		{success: idTag},
		url,
		{
		asynchronous:true,
		method: 'get',
		parameters: pars,
		evalScripts:true,
		onFailure: reportError,
		encoding:'utf-8',
		contentType:'application/x-www-form-urlencoded'
		}
	);
//window.location.reload();

}

//登陆bycookie
function ajaxLoginBycookie(idTag){
var url = "/ajaxHtml/ajaxLoginBycookie.asp";
var myAjax = new Ajax.Updater(
		{success: idTag},
		url,
		{
		asynchronous:true,
		method: 'get',
		//parameters: pars,
		onFailure: reportError,
		encoding:'utf-8',
		contentType:'application/x-www-form-urlencoded'
		}
	);
}
//登陆bycookie
function ajaxLoginBycookie2(idTag){
var url = "/ajaxHtml/ajaxLoginBycookie2.asp";
var myAjax = new Ajax.Updater(
		{success: idTag},
		url,
		{
		asynchronous:true,
		method: 'get',
		//parameters: pars,
		onFailure: reportError,
		encoding:'utf-8',
		contentType:'application/x-www-form-urlencoded'
		}
	);
}
//等出
function ajaxLogout(idTag){
var url = "/ajaxHtml/ajaxLogout.asp";

var myAjax = new Ajax.Updater(
		{success: idTag},
		url,
		{
		asynchronous:true,
		method: 'get',
		//parameters: pars,
		onFailure: reportError,
		encoding:'utf-8',
		contentType:'application/x-www-form-urlencoded'
		}
	);
//window.location.reload();
}
//等出
function ajaxLogout2(idTag){
var url = "/ajaxHtml/ajaxLogout2.asp";

var myAjax = new Ajax.Updater(
		{success: idTag},
		url,
		{
		asynchronous:true,
		method: 'get',
		//parameters: pars,
		onFailure: reportError,
		encoding:'utf-8',
		contentType:'application/x-www-form-urlencoded'
		}
	);
window.location.reload();
}

function reportError(request){
	//alert('对不起，服务器内部错误，请稍后再试：）');
}

var myGlobalHandlers = {
onCreate: function(){Element.show('systemWorking');},
onComplete: function() {if(Ajax.activeRequestCount == 0){Element.hide('systemWorking');
}
}
};
//Ajax.Responders.register(myGlobalHandlers);