function showNavText() {
    this.lastChild.style.visibility = "visible";
    this.firstChild.src = this.firstChild.src.replace(/-p\.png$/, "-a.png");
}

function hideNavText() {
    this.lastChild.style.visibility = "hidden";
    this.firstChild.src = this.firstChild.src.replace(/-a\.png$/, "-p.png");
}


/* Attach mouseover to navigation */
function navigation() {
    var nav = new Array("home", "profile", "topics", "photos");
    for (var i=0; i<nav.length; i++) {
        var node = document.getElementById("smallnav-" + nav[i]);
        node.style.visibility = "hidden";
        node = node.parentNode;
        node.onmouseover = showNavText;
        node.onmouseout  = hideNavText;
        var img = new Image(); img.src = "images/" + nav[i] + "-s-p.png";
        var img = new Image(); img.src = "images/" + nav[i] + "-s-a.png";
    }
}

AJS.AEV(window, 'load', navigation);