function externalLinks() {
    if (!document.getElementsByTagName) return;

    var anchors = document.getElementsByTagName("a");
    for (var i=0; i < anchors.length; i++) {
        if (anchors[i].getAttribute("href") &&
               (anchors[i].getAttribute("rel") == "external" ||
                anchors[i].getAttribute("rel") == "nofollow")) {
            anchors[i].target = "_blank";
        }
    }
}
window.onload = externalLinks;

function getImages(id, path1, path2) {
    var imgObj = document.getElementById(id);

// alert("src: " + imgObj.src);

    if (imgObj.src.endsWith(path1)) {
        imgObj.src = path2;
    } else {
        imgObj.src = path1;
    }
}

String.prototype.endsWith = function(str) {
    return ( this.match(str+"$") == str )
}