function checkLogin(){
	if($('user').value == "")
	{
		$('login_msg').innerHTML = "请输入您的用户名或E-mail！";
		return false;
	}else if($('password').value == "")
	{
		$('login_msg').innerHTML = "请输入您的登录密码！";
		return false;
	}else {
		
		if(is_code) {
			//alert('ok');
			//$('form1').submit();
			return true;
		}else {
			$('login_msg').innerHTML ="请输入验证码！";//请输入验证码
			return false;
		}
	}
}

function check_code()
{
	is_code = 0;
	var code = $('code').value;
	if( code == "" )
	{
		$('login_msg').innerHTML ="请输入验证码！";//请输入验证码
		is_code = 0;
		return false
	}
	var url = 'city.php';
	var sj = new Date();
	var pars = 'shuiji=' + sj+'&yzm='+code; 
	var myAjax = new Ajax.Request(url,{method: 'get', parameters: pars, onComplete:showResponse} )	
	function showResponse(originalRequest)
	{
		//alert(originalRequest.responseText);
		if(originalRequest.responseText>0)
		{	
			//$('login_msg').className = 'str_sm_error_1';
			$('login_msg').innerHTML ="请正确填写验证码";//请正确填写验证码
			is_code = 0;
			return false;

		}else{
			//login_msg.className = 'str_sm_ok_1';
			login_msg.innerHTML ="";//<img src=image/default/icon_right_19x19.gif>
			is_code = 1;
			return true;
			
		}
	}
}

//验证码输入控制
function limit_code(){
	$('code').value=$('code').value.replace(/[^0-9]/g,'');
}