var http = createRequestObject();
function createRequestObject(){
    var request_;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        request_ = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else{
        request_ = new XMLHttpRequest();
    }
    return request_;
}
/////////// TOP BOX
var category_id;
function getInfotop(category_id){
    http.open('get', 'scripts/CategoryBoxTop.php?category_id='+category_id);
    http.onreadystatechange = handleInfo;
    http.send(null);
}
function handleInfo(){
    if(http.readyState == 1){
        document.getElementById('top_box').innerHTML = '<img src=images/animated_loading.gif>';
    }
    if(http.readyState == 4){
        var response = http.responseText;
        document.getElementById('top_box').innerHTML = response;
    }
}