<style type="text/css">
#findXdate {
background-color: #243240;
border: 1px solid #4D5B68;
margin: 0 auto;
padding: 5px 0 10px;
text-align: center;
width: 250px;
}
#findXdate span {
color: #FFFFFF;
display:block;
margin-bottom: 5px;
}
#findXdate select {
background-color: #CCC;
border: 2px solid #8D9BA8;
color: #000;
font-size: 11px;
width: 60px;
}
#findXdate input {
background-color: #CCC;
border: 2px solid #8D9BA8;
color: #000;
cursor: pointer;
font-size: 10px;
font-weight: bold;
}
</style>

<script type="text/javascript">
home_page = "http://huynh-nhat-ha.blogspot.com/";
timezone = "+07:00";
function submitdate(){
year = document.selectdate.year.options[document.selectdate.year.selectedIndex].value;month = document.selectdate.month.options[document.selectdate.month.selectedIndex].value;day = document.selectdate.day.options[document.selectdate.day.selectedIndex].value;tmax = year+"-"+month+"-"+day+"T23:59:59"+timezone;
tmin = year+"-"+month+"-"+day+"T00:00:00"+timezone;
tlink = home_page+"search?updated-max="+encodeURIComponent(tmax)+"&updated-min="+encodeURIComponent(tmin)+"&max-results=20";
if(year=="" || month=="" || day=="") {
alert("Vui lòng chọn ngày chính xác!"); return false;
} else {
self.location.href=tlink;
}
}
</script>

<form id="findXdate" name="selectdate"><span>Tìm bài viết theo ngày</span>
<select name="day"><option value="" selected="selected">Ngày</option><option value="01">1</option><option value="02">2</option><option value="03">3</option><option value="04">4</option><option value="05">5</option><option value="06">6</option><option value="07">7</option><option value="08">8</option><option value="09">9</option><option value="10">10</option><option value="11">11</option><option value="12">12</option><option value="13">13</option><option value="14">14</option><option value="15">15</option><option value="16">16</option><option value="17">17</option><option value="18">18</option><option value="19">19</option><option value="20">20</option><option value="21">21</option><option value="22">22</option><option value="23">23</option><option value="24">24</option><option value="25">25</option><option value="26">26</option><option value="27">27</option><option value="28">28</option><option value="29">29</option><option value="30">30</option><option value="31">31</option></select> <select name="month"><option value="" selected="selected">Tháng</option><option value="01">01</option><option value="02">02</option><option value="03">03</option><option value="04">04</option><option value="05">05</option><option value="06">06</option><option value="07">07</option><option value="08">08</option><option value="09">09</option><option value="10">10</option><option value="11">11</option><option value="12">12</option></select> <select name="year"><option value="" selected="selected">Năm</option><option value="2010">2010</option><option value="2011">2011</option></select> <input type="button" onclick="submitdate()" value="TÌM"/></form>