var xmlhttp;

function showRSS(str)
{
    xmlhttp=GetXmlHttpObject();
    if (xmlhttp==null)
    {
        alert ("Your browser does not support XML HTTP Request");
        return;
    }
    var url="getrss.php";
    url=url+"?q="+str;
    url=url+"&sid="+Math.random();
    xmlhttp.onreadystatechange=stateChanged;
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
}

function stateChanged()
{
    if (xmlhttp.readyState==4)
    {
        document.getElementById("rssOutput").innerHTML=xmlhttp.responseText;
    }
}

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;
}