var url="http://www.icafe28.com/olol/checkCode.htm?";
var actUrl="http://www.icafe28.com/olol/admin/gologin.htm";

 $(document).ready(function() {  
        reFlushCode();
    });

function reFlushCode(){
	var d = new Date();  
//	$("#secCode").attr({src:""});
	$("#secCode").attr({src:url+"t="+d.toString(38)});
	
}

function doLogin(){
	var usr = document.getElementById("user").value;
	var pwd = document.getElementById("psw").value;
	if(isEmpty(usr) || isEmpty(pwd)){
		alert('请输入用户名密码!');
		return false;
	}
	var code = document.getElementById("code").value;
	if(isEmpty(code)){
		alert('请输入验证码!');
		return false;
	}
	var form = document.getElementById("login");
	form.action=actUrl;
	form.submit();
}

function isEmpty(val){
	if(typeof(val) == 'string'){
		return val == '';
	}

	return true;
}