function replaceQElements() {
    var qElements = document.getElementsByTagName("q");
    
    for(var i = qElements.length - 1; i > -1; i--)
    {
        var quoteText = document.createTextNode("\u201C" + qElements.item(i).firstChild.nodeValue + "\u201D");
        qElements.item(i).parentNode.replaceChild(quoteText, qElements.item(i));
    }   
}