ajax jquery

    //version sin Jquery

    function startChat( idToChat, nameToChat ) {
        document.getElementById('postingChat').innerHTML = "";
        lastDateChat = -1;

        var xmlhttp;
        if (window.XMLHttpRequest)
        {// code for IE7+, Firefox, Chrome, Opera, Safari
            xmlhttp=new XMLHttpRequest();
        } else {// code for IE6, IE5
            xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
        }

        xmlhttp.onreadystatechange=function()
        {
            if (xmlhttp.readyState==4 && xmlhttp.status==200)
            {
                chatTableName = getNumber(xmlhttp.responseText);
                loadPreviousChat(); // White if there wasnt any chat before
            }
        }

    xmlhttp.open("GET","chatQuery.php?to_id="+idToChat+"&user_id=<? echo $data['user_id']; ?>", true);
        xmlhttp.send();

        document.getElementById("person1Img").src = "https://graph.facebook.com/"+idToChat+"/picture";
        document.getElementById("person1Name").innerHTML = nameToChat;
        document.getElementById("person1").style.visibility = "visible";
    }

*/
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*/
    //Lo mismo con JQuery

function startChat( idToChat, nameToChat ) {
        document.getElementById('postingChat').innerHTML = "";
        lastDateChat = -1;

        $.ajax({
                type: "GET",
                url: "chatQuery.php?to_id="+idToChat+"&user_id=<? echo $data['user_id']; ?>",
                    dataType: "jsonp",
                success: function (data,status,xmlhttp) {
                            chatTableName = getNumber(xmlhttp.responseText);
                    loadPreviousChat(); // White if there wasnt any
                     },
        });;


        document.getElementById("person1Img").src = "https://graph.facebook.com/" +idToChat+"/picture";
        document.getElementById("person1Name").innerHTML = nameToChat;
        document.getElementById("person1").style.visibility = "visible";
    }