怎么在网站嵌入百度搜索框

<div style='overflow:hidden'>
    <form onsubmit="return baiduWithHttps(this)" action="http://www.baidu.com/baidu" target="_blank">
    <input name="tn" type="hidden" value="SE_zzsearchcode_shhzc78w"> 
    <input class='bdtext' type="text"  onfocus="checkHttps" name="word"  size="30">
    <input class='bdbtn' type="submit"value="百度搜索">
    </form>
    <script src="http://s1.bdstatic.com/r/www/cache/global/js/BaiduHttps_20150714_zhanzhang.js"></script>
    <script>
        function checkHttps () {
            BaiduHttps.useHttps();    
        };
        function baiduWithHttps (formname) {
            var data = BaiduHttps.useHttps();
            if (data.s === 0) {
                return true;
            }
            else {
                formname.action = 'https://www.baidu.com/baidu' + '?ssl_s=1&ssl_c' + data.ssl_code;
                return true;
            }
        };
    </script> 
</div>

input.bdbtn {width: 65px;height: 28px;line-height: 28px;font: 12px \5b8b\4f53;cursor: pointer;outline: none;display: inline-block;text-align: center;color: #fff;border: none;background-color: #1a89ed;}
input.bdtext {width: 240px;padding-left: 5px;margin-left: 10px;margin-right: 10px;height: 22px;line-height: 22px;}