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<html>
    <body>
<script language="javascript">


function createRequestObject() //object »ý¼ºÀÌ °¡´ÉÇÑ ºê¶ó¿ìÀúÀÎÁö È®ÀÎ.
{
    var req;
    //
    if(window.XMLHttpRequest) // ºê¶ó¿ìÁ®°¡ XMLHttpRequest °´Ã¼¸¦ °¡Áö°í ÀÖ´ÂÁö ÆÇ´Ü
    {
        // Firefox, Safari, Opera...
        req = new XMLHttpRequest();
    }
    else if(window.ActiveXObject) // ºê¶ó¿ì°¡ ActiveX ¸¦ ¹Þ¾Æ¿Ã ¼ö ÀÖ´ÂÁö ÆÇ´Ü
    {
        // Internet Explorer 5+
        req = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else // HTTP Åë½ÅÀ» ÇÒ¼ö ¾ø´Â ºê¶ó¿ìÁ®ÀÎ °æ¿ì
    {
        //"Your Browser Does Not Support This Script - Please Upgrade Your Browser ASAP");
    }
    return req; // ºê¶ó¿ìÁ®¿¡ ¸Â´Â HTTP °´Ã¼¸¦ °¡Á®¿Í °´Ã¼ ¸®ÅÏ
}


// XMLHttpRequest object»ý¼º [À§ÀÇ ÇÔ¼ö·Î ºê¶ó¿ìÀú¿¡ ¸Â´Â °´Ã¼¸¦ ¹Þ¾Æ¿È]
var http = createRequestObject();


function sendRequest(page) // µ¥ÀÌÅÍ ÆäÀÌÁö ºÒ·¯¿À±â
{
    // get ¹æ½ÄÀ¸·Î ÆĶó¹ÌÅÍ·Î ³Ñ°Ü¹ÞÀº °´Ã¼¸¦ °¡Á®¿Àµµ·Ï ¼ÂÆÃ
    http.open('get', page);
    http.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT"); //ij½Ì¹æÁö¤»
    // ÆäÀÌÁö·ÎºÎÅÍÀÇ onreadystatechange Áï ÀоîµéÀÏ ¼ö ÀÖ´Ù´Â »óÅ°ªÀ» ¹ÞÀ¸¸é handleResponse ÇÔ¼ö¸¦ ½ÇÇàÇϵµ·Ï ÇÔ
    http.onreadystatechange = handleResponse;
    // ÆäÀÌÁö¸¦ °¡Á®¿Àµµ·Ï È£Ãâ
    http.send(null);
}


function handleResponse() // ºÒ·¯¿Â°ª ó¸®
{
    // http.readyState 4 Àΰæ¿ì °´Ã¼¸¦ È£ÃâÇÑ ÆäÀÌÁö·ÎºÎÅÍ ÀоîµéÀÏ Áغñ°¡ µÆ´Ù´Â ¸»ÀÌ°í
    // http.status °¡ 200 ÀÎ °æ¿ì´Â ¿¡·¯°¡ ¹ß»ýÇÏÁö ¾Ê°í ¿ÂÀüÈ÷ ÄÁÅÙÃ÷°¡ ·ÎµùµÆÀ½À» ÀÇ¹Ì ÇÕ´Ï´Ù.
    // http.status »óÅ´ ¿©·¯°¡Áö°¡ ÀÖÀ»¼ö Àִµ¥ ÆäÀÌÁö¸¦ ãÀ»¼ö ¾øÀ»°æ¿ì 404 ÄÄÆÄÀÏÀÌ ¾ÈµÆÀ»°æ¿ì 500
    // ÆäÀÌÁö Á¢¼Ó ±ÇÇÑÀÌ ¾øÀ»°æ¿ì 403 µîÀÇ ¿À·ùµîÀ» °¡Á®¿É´Ï´Ù.
    if(http.readyState == 4 && http.status == 200)
    {
        // Text returned FROM the PHP script
        // http °´Ã¼·Î ¹Þ¾Æ¿Â ÆäÀÌÁöÀÇ ÄÁÅÙÃ÷ TEXT ¸¦ ¹Þ¾Æ¿Í response º¯¼ö¿¡ ÀúÀå
        var response = http.responseText;
        // ¹Þ¾Æ¿Â °ªÀÌ À¯È¿Çϸé
        if(response)
        {
            // ÆäÀÌÁö¿¡¼­ ºÒ·¯¿Â °ªÀ» id °¡ dbstatus Àΰ´Ã¼¿¡ Ç¥½Ã
            document.getElementById("dbstatus").innerHTML = response;
        }
    }
}


function repeatloop() //ÃÖÁ¾ÀûÀ¸·Î ó¸®Çؼ­ º¸¿©ÁÖ±â
{
    // sendRequest ÇÔ¼ö¸¦ È£ÃâÇϸç ÆĶó¹ÌÅͷΠȣÃâÇÒ ÆäÀÌÁö ¸íÀ» ³Ñ°ÜÁÜ
    sendRequest('sampledb.php'); // °ªÀ» ¹Þ¾Æ¿Ã phpÀÇ À§Ä¡
    // 1ÃÊÈÄ¿¡ ÀÚ±â ÇÔ¼ö¸¦ ´Ù½Ã È£Ãâ Àç±ÍÇÔ¼ö
    setTimeout("repeatloop()", 1000); //refresh ºóµµ 1000 = 1ÃÊ
}


// ºê¶ó¿ìÁ®°¡ ½ÇÇàµÉ¶§ repeatloop ÇÔ¼ö¸¦ ½ÇÇà
window.onload=function()
{
    // repeatloop ÇÔ¼ö È£Ãâ
    repeatloop();
}


</script>
    </head>
    <body>
        ÀÐÁö ¾ÊÀº »õ±ÛÀÌ<span id="dbstatus"></span>°³ ÀÖ½À´Ï´Ù.
    </body>
</html>
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