[vadimg88]

1. יש דוגמא למטה
2. http://www.openjs.com/articles/ajax_...using_post.php

function processReqChange() {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            // ...processing statements go here...
        } else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
        }
    }
}