var xmlHttp;

function loadInfo(index) {

    xmlHttp=GetXmlHttpObject()

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

function stateChanged() { 

    if (xmlHttp.readyState==4) { 
        document.getElementById("info").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;
}