I need help with a little timeout javascript :)

Hey guys im new here

I need a little help with this javascript. It works well but never it doesnt seem to execute

 window.setTimeout(reChangeClass, 3000);

Code (markup):

when you change classes. The problem simply is the classes do not change to "slidreset" but stay on "slide" or "slide2"

could anyone help me?? thanks a lot

function addListener(o, e, f) {
    if (o.addEventListener) {
        o.addEventListener(e, f, false);
    } else {
        o.attachEvent("on" + e, f);
    }
}



function bindAnchors() {
    try {
        var collection1 = document.getElementById("topmenu").getElementsByTagName("a");
        for (i = 0; i <= collection1.length - 1; ++i) {
            var lien = collection1.item(i);
            if (lien.className != 'noslide')
                addListener(lien, "click", changeClass2);
        }
    } catch (e) {}
    try {
        var collection2 = document.getElementById("content").getElementsByTagName("a");
        for (i = 0; i <= collection2.length - 1; ++i) {
            var lien = collection2.item(i);
            if (lien.className != 'noslide')
                addListener(lien, "click", changeClass1);
        }
    } catch (e) {}
    try {
        var collection5 = document.getElementById("footer").getElementsByTagName("a");
        for (i = 0; i <= collection5.length - 1; ++i) {
            var lien = collection5.item(i);
            if (lien.className != 'noslide')
                addListener(lien, "click", changeClass1);
        }
    } catch (e) {}
    try {
        var collection3 = document.getElementById("toprightmenu").getElementsByTagName("a");
        for (i = 0; i <= collection3.length - 1; ++i) {
            var lien = collection3.item(i);
            if (lien.className != 'noslide')
                addListener(lien, "click", changeClass1);
        }
    } catch (e) {}
    try {
        var collection4 = document.getElementById("toprightbutton").getElementsByTagName("a");
        for (i = 0; i <= collection4.length - 1; ++i) {
            var lien = collection4.item(i);
            if (lien.className != 'noslide')
                addListener(lien, "click", changeClass1);
        }
    } catch (e) {}
}


function reChangeClass() {
    document.getElementById("content").className = "slidereset";
    document.getElementById("footer").className = "slidereset";
    document.getElementById("list").className = "slidereset";
}


function changeClass1() {
    document.getElementById("content").className = "slide";
    document.getElementById("footer").className = "slide";
    document.getElementById("list").className = "slide";
    window.setTimeout(reChangeClass, 3000);


}


function changeClass2() {
    document.getElementById("content").className = "slide2";
    document.getElementById("footer").className = "slide2";
    document.getElementById("list").className = "slide2";
    window.setTimeout(reChangeClass, 3000);
}

addListener(window, "load", bindAnchors);

HTML: