function createRequestObject()
{
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer")
    {
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else
    {
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sndReq(currency,amount)
{
    http.open('get', '/currencyconvertor.php?currency='+currency+'&amount='+amount);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function handleResponse()
{
    if(http.readyState == 4)
    {
        var response = http.responseText;
        var update = new Array();

        if(response.indexOf('|' != -1))
        {
            update = response.split('|');
            document.getElementById(update[0]).value = update[1];
        }
    }
}