Lifestream widget on my site

gistfile1.js

var YAHOO_PIPE_URL = "http://pipes.yahoo.com/pipes/pipe.run?_id=7NxhUNSA3RG_BCC6BBNMsA&_render=json";

function lifeStreamCallback(stream){
    var lifeStreamRootDom = document.getElementById("lifestream");
    try{
        lifeStreamRootDom.removeChild(lifeStreamRootDom.getElementsByTagName("ul")[0]);
    }catch(e) {}
    var lifeStreamListDom =  document.createElement("ul");    

    for(var i=0; i<stream.count; i++) {
        var item  = stream.value.items[i];
        var itemDomElement = document.createElement("li");
        
        var titleDomElement = document.createElement("p");
        titleDomElement.setAttribute("class", "streamTitle");
        titleDomElement.innerHTML = item.title;
        itemDomElement.appendChild(titleDomElement);
        
        var descDomElement = document.createElement("p");
        descDomElement.setAttribute("class", "streamDesc")
        var content = item.description.length > 100 ? item.description.substring(0, 97)+"..." : item.description;
        content += '<a href="' + item.link + '" title="Permalink" target="_blank"><strong>\u2197</strong></a>';
        descDomElement.innerHTML = content;
        itemDomElement.appendChild(descDomElement);
        
        lifeStreamListDom.appendChild(itemDomElement);
    }
    lifeStreamRootDom.appendChild(lifeStreamListDom);
    
    // remove script tag
    var t = document.getElementById("lifeStreamScriptTag");
    t.parentNode.removeChild(t);
}

function loadLifeStream() {
    var url = YAHOO_PIPE_URL + "&_callback="+"lifeStreamCallback";
    
    var scriptTag = document.createElement("script");
    scriptTag.setAttribute("src", url);
    scriptTag.setAttribute("type", "text/javascript");
    scriptTag.setAttribute("id", "lifeStreamScriptTag");
    
    document.getElementsByTagName("head")[0].appendChild(scriptTag);
    
    window.setTimeout(loadLifeStream, 5*60*1000);
}

window.onload = loadLifeStream;

gistfile2.css

#lifestream {
    position: absolute;
    right: 30px;
    top: 30px;
    width:400px;
}
#lifestream h2 {
    font-size: 16px;
    margin:0;
    padding:0;
    margin-bottom:10px;
}
#lifestream p {
    color:#999;
    font-size:11px;
}
#lifestream ul {
    list-style: none;
    margin:0;
    padding:0;
}
#lifestream ul li {
    font-size: 12px;
    -moz-border-radius:5px;
    -webkit-border-radius:5px;
    background-color: #EEE;
    padding:5px;
    margin:5px;    
}
#lifestream ul li:hover {
    background-color: #FEFEFE;
    
}
#lifestream ul li p.streamTitle {
    text-shadow: 0 1px 0 #FFF;
    color: #333;
    font-weight: bold;
    margin:0;
    padding:0;
    margin-bottom:5px;
}
#lifestream ul li p.streamDesc {
    color:#66;
    margin:0;
    padding:0;
}