function loadTweets(target) {

    if (window.XMLHttpRequest) {
        httpReq=new XMLHttpRequest();
    } else { // for IE6, IE5
        httpReq=new ActiveXObject("Microsoft.XMLHTTP");
    }
    
    document.getElementById(target).innerHTML = "loading tweets..."
    
    httpReq.onreadystatechange = function() {
        if (httpReq.readyState==4) {
            var string = "";
            var tweet = httpReq.responseXML;
            var length = tweet.getElementsByTagName("tweet").length;
            for (i=0; i<length; i++) {
                string = string
                + "<div class='tweet'><p><a href='http://twitter.com/pud9y'>"
                + tweet.getElementsByTagName("author")[i].childNodes[0].nodeValue
                + "</a>: "+tweet.getElementsByTagName("content")[i].childNodes[0].nodeValue
                + "<br /><span class'date'>"
                + tweet.getElementsByTagName("published")[i].childNodes[0].nodeValue
                + "</span> </p> </div>";
            }
            if (length > 0) {
                document.getElementById(target).innerHTML = string;    
            } else {
                document.getElementById(target).innerHTML = "No new tweets";
            }
            
        }
    };
    
    httpReq.open("GET","/scp/getPudTweets.php",true);
    httpReq.send();
}

function loadPosts(target) {
    alert("post");
}