$(document).ready(function() {
	// The first time click it to show login form
	$("#login_button").click(function() {
		if(!$(this).hasClass("flag")){  
			$("#login_form").append('<hr color="#ACD343">' + 
															'<form action="/sessions/create" id="login_forma">' + 
															'	<ul id="login_wrapper" style="width:160px">' +
															'<li style="float:right">用户名:<input type="text" name="login" id="login"></li>' + 
															'<li style="float:right">密码:<input type="password" name="password" id="password"></li>' +
															'</form>');
			$(".login").animate({height:"+=15px"},1000);
			$(this).animate({top:"+=95px"},1000).addClass("flag");
		}
		else{
			$("#login_forma").submit();
			
		};
	});
});