var xmlHttp;

function loadwinner(input) {

    if (input.length==0) { 
      return;
    }

    xmlHttp=GetXmlHttpObject()
    if (xmlHttp==null) {
        alert ("This website uses AJAX. Javscript must be enabled!");
        return;
    } 

    var url="php/loadwinner.php";
    url=url+"?input="+input;
    xmlHttp.onreadystatechange=stateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
} 

function stateChanged() { 

    if (xmlHttp.readyState==4) { 
        document.getElementById("winners").innerHTML=xmlHttp.responseText;
    }
}

function GetXmlHttpObject() {

    var xmlHttp=null;

    try {
    // Firefox, Opera 8.0+, Safari
        xmlHttp=new XMLHttpRequest();
    }
    catch (e) {
    // Internet Explorer
        try {
            xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e) {
            xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    return xmlHttp;
}