var xmlhttp;
var item_id;
function showUser(str) {
    xmlhttp = GetXmlHttpObject();
	item_id = str;
    if (xmlhttp == null) {
        alert("Browser does not support HTTP Request");
        return;
    }
    var url = "cont_response.php";
    //alert(str);
    url = url + "?item_id=" + str;
    xmlhttp.onreadystatechange = stateChanged;
    xmlhttp.open("GET", url, true);
    xmlhttp.send(null);
}
function stateChanged() {
    if (xmlhttp.readyState == 4) {
        xmlDoc = xmlhttp.responseXML;
		if(xmlhttp.responseText != ''){
	        var len = xmlDoc.getElementsByTagName("Username").length;
	        var uhtml = '';
	        uhtml += '<table width="100%" cellpadding="5" cellspacing="0" border="0">';
	        uhtml += '<tr class="lat">';
	        uhtml += '<td valign="top" align="left" width="2%">#</td>';
	        uhtml += '<td valign="top" align="left" width="60%">&nbsp;&nbsp;Latest Bid</td>';
	        uhtml += '<td align="center" width="38%">Amount</td>';
	        uhtml += '</tr>';
	        for (var i = 0; i < len; i++) {
	            uhtml += '<tr class="amtt" height="30" bgcolor="' + (((i % 2) == 0) ? '#f9f9f9': '#f3f3f3') + '">';
	            uhtml += '<td  align="left" class="u_nam">' + parseInt(i + 1) + '</td>';
	            uhtml += '<td  align="left" class="u_nam">' + xmlDoc.getElementsByTagName("Username")[i].childNodes[0].nodeValue + '</td>';
	            uhtml += '<td width="50%" align="center">' + xmlDoc.getElementsByTagName("BiddingAmount")[i].childNodes[0].nodeValue + '</td>';
	            uhtml += '</tr>';
	        }
	        uhtml += '</table>';
			if(document.getElementById('bidUserList'))
		        document.getElementById('bidUserList').innerHTML = uhtml;
			
			setTimeout("showUser(item_id);", 1000);
		}
    }
}

function GetXmlHttpObject() {
    if (window.XMLHttpRequest) {
        // code for IE7+, Firefox, Chrome, Opera, Safari
        return new XMLHttpRequest();
    }
    if (window.ActiveXObject) {
        // code for IE6, IE5
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
    return null;
}