//用户登录
function userLogin(path){
	var url=path+'?date='+new Date().toLocaleString();
	var params='';
	var myAjax = new Ajax.Request(url,{
		method:'post',
		onComplete:userLoginRequest,
		asynchronous:true
	});
    if(myAjax.transport.readyState !=4) {
    }
}
function userLoginRequest(request){  
	if(request.readyState==4&&request.status==200){
		document.getElementById("userLogin").innerHTML=request.responseText;
	}
}