[Costin Trifan]

for that, you need to prevent the default action:

function preventDefault(evt) {
    if (evt.preventDefault) {
        // FIREFOX
        return evt.preventDefault();
    }
    else {
        // IE
        return evt.returnValue = false;
    }
}

function toggleview(element1, event) {
    preventDefault(event);

    element1 = document.getElementById(element1);

    return element1.style.display = (element1.style.display != 'block') ? 'block' : 'none';
}

And in your html (because you hard-coded everything):

<div class="peekaboo">
<a href="#" onclick="toggleview('q5', event)">[show]</a>
</div>